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<h1>Ant User Manual</h1>
<p>by</p>
<!-- Names are in alphabetical order, on last name -->
<ul>
  <li>Jacques Bergeron (<a href="mailto:jacques.bergeron@dogico.com">jacques.bergeron@dogico.com</a>)</li>
  <li>Stefan Bodewig (<a href="mailto:stefan.bodewig@epost.de">stefan.bodewig@epost.de</a>)</li>
  <li>Patrick Chanezon (<a href="mailto:chanezon@netscape.com">chanezon@netscape.com</a>)</li>
  <li>James Duncan Davison (<a href="mailto:duncan@x180.com">duncan@x180.com</a>)</li>
  <li>Tom Dimock (<a href="mailto:tad1@cornell.edu">tad1@cornell.edu</a>)</li>
  <li>Bill Kelly (<a href="mailto:bill.kelly@softwired-inc.com">bill.kelly@softwired-inc.com</a>)</li>
  <li>Arnout J. Kuiper (<a href="mailto:ajkuiper@wxs.nl">ajkuiper@wxs.nl</a>)</li>
  <li>Conor MacNeill (<a href="mailto:conor@cortexebusiness.com.au">conor@cortexebusiness.com.au</a>)</li>
  <li>Stefano Mazzocchi (<a href="mailto:stefano@apache.org">stefano@apache.org</a>)</li>
  <li>Sam Ruby (<a href="mailto:rubys@us.ibm.com">rubys@us.ibm.com</a>)</li>
  <li>Nico Seessle (<a href="mailto:nico@seessle.de">nico@seessle.de</a>)</li>
  <li>Roger Vaughn (<a href="mailto:rvaughn@seaconinc.com">rvaughn@seaconinc.com</a>)</li>
  <li>Dave Walend (<a href="mailto:dwalend@cs.tufts.edu">dwalend@cs.tufts.edu</a>)</li>
</ul>

<p>Version 1.2 - 2000/10/13</p>

<hr>
<h2>Table of Contents</h2>
<ul>
  <li><a href="#introduction">Introduction</a></li>
  <li><a href="#getting">Getting Ant</a></li>
  <li><a href="#sysrequirements">System Requirements</a></li>
  <li><a href="#buildingant">Building Ant</a></li>
  <li><a href="#installing">Installing Ant</a></li>
  <li><a href="#running">Running Ant</a></li>
  <li><a href="#buildfile">Writing a simple buildfile</a>
  <li><a href="#directorybasedtasks">Directory based tasks</a></li>
  <li><a href="#tasks">Built in Tasks</a>
  <li><a href="#optionaltasks">Optional Tasks</a>
  <li><a href="#buildevents">Build Events</a>
  <li><a href="#writingowntask">Writing your own task</a></li>
  <li><a href="#faq">FAQ, DTD, external resources</a>
  <li><a href="../LICENSE">License</a></li>
  <li><a href="#feedback">Feedback</a></li>
</ul>

<hr>
<h2><a name="introduction">Introduction</a></h2>
<p>Ant is a Java based build tool. In theory it is kind of like make without
make's wrinkles.</p>
<h3>Why?</h3>
<p>Why another build tool when there is already make, gnumake, nmake, jam, and
others? Because all of those tools have limitations that its original author
couldn't live with when developing software across multiple platforms. Make like
tools are inherently shell based. They evaluate a set of dependencies and then
execute commands not unlike what you would issue on a shell. This means that you
can easily extend these tools by using or writing any program for the OS that
you are working on. However, this also means that you limit yourself to the OS,
or at least the OS type such as Unix, that you are working on.</p>
<p>Makefiles are inherently evil as well. Anybody who has worked on them for any
time has run into the dreaded tab problem. &quot;Is my command not executing
because I have a space in front of my tab!!!&quot; said the original author of
Ant way too many times. Tools like Jam took care of this to a great degree, but
still use yet another format to use and remember.</p>
<p>Ant is different. Instead a model where it is extended with shell based
commands, it is extended using Java classes. Instead of writing shell commands,
the configuration files are XML based calling out a target tree where various
tasks get executed. Each task is run by an object which implements a particular
Task interface.</p>
<p>Granted, this removes some of the expressive power that is inherent by being
able to construct a shell command such as `find . -name foo -exec rm {}` but it
gives you the ability to be cross platform. To work anywhere and everywhere. And
hey, if you really need to execute a shell command, Ant has an exec rule that
allows different commands to be executed based on the OS that it is executing
on.</p>

<hr>
<h2><a name="getting">Getting Ant</a></h2>
<h3>Binary edition</h3>
<p>The latest stable version of Ant can be downloaded from <a
href="http://jakarta.apache.org/builds/ant/release/v1.1/bin/">
http://jakarta.apache.org/builds/ant/release/v1.1/bin/</a>.
If you like living on the edge, you can download the latest version from <a
href="http://jakarta.apache.org/builds/ant/nightly/">http://jakarta.apache.org/builds/ant/nightly/</a>.</p>
<h3>Source edition</h3>
<p>If you prefer the source edition, you can download Ant from <a
href="http://jakarta.apache.org/builds/ant/release/v1.1/src/">
http://jakarta.apache.org/builds/ant/release/v1.1/src/</a>
(latest stable) or from <a
href="http://jakarta.apache.org/from-cvs/jakarta-tools/">http://jakarta.apache.org/from-cvs/jakarta-ant/</a>
(current). See the section <a href="#buildingant">Building Ant</a> on how to
build Ant from the source code.</p>

<hr>
<h2><a name="sysrequirements">System Requirements</a></h2>
<p>
  To build and use ant you must have a JAXP compliant XML parser installed and available on your classpath.
  <p>
  If you do not have a JAXP compliant XML parse installed, you may use the reference implementation 
  available from Sun. It is available from <a href="http://java.sun.com/xml">http://java.sun.com/xml</a>.
  Once installed make sure the &quot;jaxp.jar&quot; and &quot;parser.jar&quot; files are in your classpath.
  <p>
  You will also need the JDK installed on your system, version 1.1 or later. 

<hr>  
<h2><a name="buildingant">Building Ant</a></h2>
<p>Go to the directory <code>jakarta-ant</code>.</p>
<p>Make sure the JDK is in you path.</p>
<p>Set the JAVA_HOME environment variable. This should be set to the
directory where the JDK is installed. See <a href="#installing">Installing Ant</a>
for examples on how to do this for your operating system.</p>
<p>Run <code>bootstrap.bat</code> (Windows) or <code>bootstrap.sh</code> (UNIX)
to build a bootstrap version of Ant.</p>
<p>When finished, use</p>
<blockquote>
  <p><code>build.bat -Dant.dist.dir=&lt;directory to install Ant&gt; dist</code></p>
</blockquote>
<p>for Windows, and</p>
<blockquote>
  <p><code>build.sh -Dant.dist.dir=&lt;directory to install Ant&gt; dist</code></p>
</blockquote>
<p>for UNIX, to create a binary distribution of Ant. This distribution can be
found in the directory you specified.</p>
<hr>
<h2><a name="installing">Installing Ant</a></h2>
<p>The binary distribution of Ant consists of three directories: <code>bin</code>,
<code>docs</code> and <code>lib</code>. Only the <code>bin</code> and <code>lib</code>
directory are crucial for running Ant. To run Ant, the following must be done:</p>
<ul>
  <li>Add the <code>bin</code> directory to your path.</li>
  <li>Set the ANT_HOME environment variable. This should be set to the directory
    which contains the <code>bin</code> and <code>lib</code> directory.</li>
  <li>Set the JAVA_HOME environment variable. This should be set to the
    directory where the JDK is installed.</li>
</ul>
<h3>Windows</h3>
<p>Assume Ant is installed in <code>c:\ant\</code>. The following sets up the
environment:</p>
<pre>set ANT_HOME=c:\ant
set JAVA_HOME=c:\jdk1.2.2
set PATH=%PATH%;%ANT_HOME%\bin</pre>
<h3>Unix (bash)</h3>
<p>Assume Ant is installed in <code>/usr/local/ant</code>. The following sets up
the environment:</p>
<pre>export ANT_HOME=/usr/local/ant
export JAVA_HOME=/usr/local/jdk-1.2.2
export PATH=${PATH}:${ANT_HOME}/bin</pre>
<h3>Advanced</h3>
<p>There are lots of variants that can be used to run Ant. What you need is at
least the following:</p>
<p>The classpath for Ant must contain <code>ant.jar</code> and any jars/classes 
needed for your chosen JAXP compliant XML parser.</p>
<p>When you need JDK functionality (like a <a href="#javac">javac</a> task, or a
<a href="#rmic">rmic</a> task), then for JDK 1.1, the <code>classes.zip</code>
file of the JDK must be added to the classpath; for JDK 1.2 or JDK 1.3, <code>tools.jar</code>
must be added. The scripts supplied with ant, in the bin directory, will add 
<code>tools.jar</code> automatically if the JAVA_HOME environment variable is set.</p>
<p>When you are executing platform specific applications (like the <a
href="#exec">exec</a> task, or the <a href="#cvs">cvs</a> task), the property <code>ant.home</code>
must be set to the directory containing a bin directory, which contains the <code>antRun</code> 
shell script necessary to run execs on Unix.</p>
<hr>
<h2><a name="running">Running Ant</a></h2>
<p>Running Ant is simple, when you installed it as described in the previous
section. Just type <code>ant</code>.</p>
<p>When nothing is specified, Ant looks for a <code>build.xml</code>
file in the current directory. When found, it uses that file as a
buildfile, otherwise it searches in the parent directory and so on
until the root of the filesystem has been reached. To make Ant use
another buildfile, use the commandline option <i>-buildfile
&lt;file&gt;</i>, where <i>&lt;file&gt;</i> is the buildfile you want
to use.</p>
<p>You can also set properties which override properties specified in the
buildfile (see the <a href="#property">property task</a>). 
This can be done with the <i>-D&lt;property&gt;=&lt;value&gt;</i>
option, where <i>&lt;property&gt;</i> is the name of the property and <i>&lt;value&gt;</i>
the value. This can also be used (and is the only way since Java can not access them) 
to have access to your environment variables, just pass -DMYVAR=%MYVAR% (Windows) or
-DMYVAR=$MYVAR (Unix) to Ant, you can then access these variables inside your build-file
as ${MYVAR}.</p>
<p>Two more options are <i>-quiet</i> which instructs Ant to print less
information on the console when running. The option <i>-verbose</i> on the other
hand makes Ant print more information on the console.</p>
<p>It is also possible to specify one or more targets that should be executed. When omitted the target that is mentioned in the <i>default</i> attribute of the project is
used.</p>
<p>The <i>-projecthelp</i> option gives a list of this projects targets. First those with a description and then those without one.</p>
<p>Commandline option summary:</p>
<pre>ant [options] [target [target2 [target3] ...]]
Options:
-help                  print this message
-projecthelp           print project help information
-version               print the version information and exit
-quiet                 be extra quiet
-verbose               be extra verbose
-debug                 print debugging information
-emacs                 produce logging information without adornments
-logfile &lt;file&gt;        use given file for log
-logger &lt;classname&gt;    the class which is to perform logging
-listener &lt;classname&gt;  add an instance of class as a project listener
-buildfile &lt;file&gt;      use given buildfile
-D&lt;property&gt;=&lt;value&gt;   use value for given property</pre>
<h3>Examples</h3>
<blockquote>
  <pre>ant</pre>
</blockquote>
<p>runs Ant using the <code>build.xml</code> file in the current directory, on
the default target.</p>
<blockquote>
  <pre>ant -buildfile test.xml</pre>
</blockquote>
<p>runs Ant using the <code>test.xml</code> file in the current directory, on
the default target.</p>
<blockquote>
  <pre>ant -buildfile test.xml dist</pre>
</blockquote>
<p>runs Ant using the <code>test.xml</code> file in the current directory, on a
target called <code>dist</code>.</p>
<blockquote>
  <pre>ant -buildfile test.xml -Dbuild=build/classes dist</pre>
</blockquote>
<p>runs Ant using the <code>test.xml</code> file in the current directory, on a
target called <code>dist</code>. It also sets the <i>build</i> property to the
value <i>build/classes</i>.</p>
<h3>Running Ant by hand</h3>
<p>When you have installed Ant in the do-it-yourself way, Ant can be started
with:</p>
<blockquote>
  <pre>java -Dant.home=c:\ant org.apache.tools.ant.Main [options] [target]</pre>
</blockquote>

<p>These instructions actually do exactly the same as the <code>ant</code>
command. The options and target are the same as when running Ant with the <code>ant</code>
command. This example assumes you have set up your classpath to include
<ul>
<li>ant.jar
<li>jars/classes for your XML parser
<li>the JDK's tools.jar
</ul>
<hr>
<h2><a name="buildfile">Writing a simple buildfile</a></h2>
<p>The buildfile is written in XML. Each buildfile contains one project.</p>
<p>Each element of the buildfile can have an <code>id</code> attribute and
can later be referred to by the value supplied to this. The value has
to be unique.</p>
<h3>Projects</h3>
<p>A project has three attributes:</p>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">name</td>
    <td valign="top">the name of the target.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">default</td>
    <td valign="top">the default target to use when no target is supplied.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">basedir</td>
    <td valign="top">the base directory from which all path calculations are
      done. This attribute might be overridden by setting the &quot;basedir&quot;
      property on forehand. When this is done, it might be omitted in the
      project tag.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>
<p>Each project defines one or more targets. A target is a set of tasks you want
to be executed. When starting Ant, you can select which target you want to have
executed. When no target is given, the project's default is used.</p>
<h3>Targets</h3>
<p>A target can depend on other targets. You might have a target for compiling,
for instance, and a target for creating a distributable. You can only build a
distributable when you have compiled first, so the distribute target depends on
the compile target. Ant resolves all these dependencies.</p>
<p>Ant tries to execute the targets in the <i>depends</i> attribute in the order
they appear (from left to right). Keep in mind that it is possible that a target
can get executed earlier when an earlier target depends on it:</p>
<blockquote>
<pre>&lt;target name=&quot;A&quot;/&gt;
&lt;target name=&quot;B&quot; depends=&quot;A&quot;/&gt;
&lt;target name=&quot;C&quot; depends=&quot;B&quot;/&gt;
&lt;target name=&quot;D&quot; depends=&quot;C,B,A&quot;/&gt;</pre>
</blockquote>
<p>Suppose we want to execute target D. From its <i>depends</i> attribute, you
might think that first target C, then B and then A is executed. Wrong! C depends
on B, and B depends on A, so first A is executed, then B, then C, and finally D.</p>
<p>A target gets executed only once. Even when more targets depend on it (see
the previous example).</p>
<p>A target has also the ability to perform its execution if (or
unless) a property has been set. This allows, for example, better
control on the building process depending on the state of the system
(java version, OS, command line properties, etc...).  To make target
<i>sense</i> this property you should add the <i>if</i> (or
<i>unless</i>) attribute with the name of the property that the target
should react to, for example</p>
<blockquote>
  <pre>&lt;target name=&quot;build-module-A&quot; if=&quot;module-A-present&quot;/&gt;</pre>
  <pre>&lt;target name=&quot;build-own-fake-module-A&quot; unless=&quot;module-A-present&quot;/&gt;</pre>
</blockquote>
<p>If no <i>if</i> and no <i>unless</i> attribute is present, the target will 
always be executed.</p>
<p>It is a good practice to place your <a
href="#tstamp">tstamp</a> tasks in a so called initialization target, on which
all other targets depend. Make sure that target is always the first one in
the depends list of the other targets. In this manual, most initialization targets
have the name &quot;init&quot;.</p>
<p>The optional <i>description</i> attribute can be used to provide a one line description of this target that is printed by the <i>-projecthelp</i> commandline option.</p>
<p>A target has the following attributes:</p>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">name</td>
    <td valign="top">the name of the target.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">depends</td>
    <td valign="top">a comma separated list of names of targets on which this
      target depends.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">if</td>
    <td valign="top">the name of the property that must be set in order for this
      target to execute.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">unless</td>
    <td valign="top">the name of the property that must not be set in order 
      for this target to execute.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">description</td>
    <td valign="top">a short description of this targets function.</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Tasks</h3>
<p>A task is a piece of code that can be executed.</p>
<p>A task can have multiple attributes (or arguments if you prefer). The value
of an attribute might contain references to a property. These references will be
resolved before the task is executed.</p>
<p>Tasks have a common structure:</p>
<blockquote>
  <pre>&lt;name attribute1=&quot;value1&quot; attribute2=&quot;value2&quot; ... /&gt;</pre>
</blockquote>
<p>where name is the name of the task, attribute-x the attribute name, and
value-x the value of this attribute.</p>
<p>There is a set of <a href="#tasks">built in tasks</a>, but it is also very
easy to <a href="#writingowntask">write your own</a>.</p>
<p>All tasks share a <code>taskname</code> attribute. The value of
this attribute will be used in the logging messages generated by
Ant.</p>
<h3>Properties</h3>
<p>A project can have a set of properties. These might be set in the buildfile
by the <a href="#property">property task</a>, or might be set outside Ant. A
property has a name and a value. Properties might be used in in the value of
task attributes. This is done by placing the property name between
&quot;${&quot; and &quot;}&quot; in the attribute value.</p>
<p>If there is a property called &quot;builddir&quot; with the value
&quot;build&quot;, then this could be used in an attribute like this: &quot;${builddir}/classes&quot;.
This is resolved as &quot;build/classes&quot;.</p>
<h3>Built in Properties</h3>
<p>Ant provides access to all system properties as if they had been
defined using a property task, for example ${os.name} expands to the
name of the operating system.</p>
<p>In addition Ant knows some built in properties:</p>
<ul>
  <li>basedir - the absolute path of the project's basedir (as set
    with the basedir attribute of &lt;project&gt;.</li>
  <li>ant.file - the absolute path of the build file.</li>
  <li>ant.java.version - the JVM version Ant detected. Currently it
    can hold the values &quot;1.1&quot;, &quot;1.2&quot; and
    &quot;1.3&quot;.</li>
</ul>
<h3>Example</h3>
<blockquote>
  <pre>
&lt;project name=&quot;MyProject&quot; default=&quot;dist&quot; basedir=&quot;.&quot;&gt;

  &lt;!-- set global properties for this build --&gt;
  &lt;property name=&quot;src&quot; value=&quot;.&quot; /&gt;
  &lt;property name=&quot;build&quot; value=&quot;build&quot; /&gt;
  &lt;property name=&quot;dist&quot;  value=&quot;dist&quot; /&gt;

  &lt;target name=&quot;prepare&quot;&gt;
    &lt;!-- Create the time stamp --&gt;
    &lt;tstamp/&gt;
    &lt;!-- Create the build directory structure used by compile --&gt;
    &lt;mkdir dir=&quot;${build}&quot; /&gt;
  &lt;/target&gt;

  &lt;target name=&quot;compile&quot; depends=&quot;prepare&quot;&gt;
    &lt;!-- Compile the java code from ${src} into ${build} --&gt;
    &lt;javac srcdir=&quot;${src}&quot; destdir=&quot;${build}&quot; /&gt;
  &lt;/target&gt;

  &lt;target name=&quot;dist&quot; depends=&quot;compile&quot;&gt;
    &lt;!-- Create the ${dist}/lib directory --&gt;
    &lt;mkdir dir=&quot;${dist}/lib&quot; /&gt;

    &lt;!-- Put everything in ${build} into the MyProject-${DSTAMP}.jar file --&gt;
    &lt;jar jarfile=&quot;${dist}/lib/MyProject-${DSTAMP}.jar&quot; basedir=&quot;${build}&quot; /&gt;
  &lt;/target&gt;

  &lt;target name=&quot;clean&quot;&gt;
    &lt;!-- Delete the ${build} and ${dist} directory trees --&gt;
    &lt;delete dir=&quot;${build}&quot; /&gt;
    &lt;delete dir=&quot;${dist}&quot; /&gt;
  &lt;/target&gt;
&lt;/project&gt;
  </pre>
</blockquote>

<h3>Token Filters</h3>
<p>A project can have a set of tokens that might be automatically expanded if
found when a file is copied, when the filtering-copy behavior is selected in the
tasks that support this. These might be set in the buildfile
by the <a href="#filter">filter task</a>.&nbsp;</p>
<p>Since this can be a very harmful behavior, the tokens in the files <b>must</b>
be of the form<i> @token@</i> where <i>token</i> is the token name that is set
in the filter task. This token syntax matches the syntax of other build systems
that perform such filtering and remains sufficiently orthogonal to most
programming and scripting languages, as well with documentation systems.</p>
<p>Note: in case a token with the format @token@ is found in a file but no
filter is associated with that token, no changes take place. So, no escaping
method is present, but as long as you choose appropriate names for your tokens,
this should not cause problems.</p>

<h3><a name="path">PATH like structures</a></h3>
<p>You can specify PATH and CLASSPATH variables using both
&quot;:&quot; and &quot;;&quot; as separator characters, Ant will
convert it to the correct character of the current operating
system.</p>
<p>Wherever PATH like values need to be specified a nested element can
be used. This takes the general form of</p>
<pre>
    &lt;classpath&gt;
      &lt;pathelement path=&quot;${classpath}&quot; /&gt;
      &lt;pathelement location=&quot;lib/helper.jar&quot; /&gt;
    &lt;/classpath&gt;
</pre>
<p>The <code>location</code> attribute specifies a single file or
directory relative to the project's base directory (or an absolute
filename), while the <code>path</code> attribute accepts &quot;:&quot;
or &quot;;&quot; separated lists of locations. The <code>path</code>
attribute is intended to be used with predefined paths - in any other
case multiple elements with <code>location</code> attributes should be
preferred.</p>
<p>As a shortcut the surrounding PATH element supports path and
location attributes of its own, so</p>
<pre>
    &lt;classpath&gt;
      &lt;pathelement path=&quot;${classpath}&quot; /&gt;
    &lt;/classpath&gt;
</pre>
<p>can be abreviated to</p>
<pre>
    &lt;classpath path=&quot;${classpath}&quot; /&gt;
</pre>
<p>In addition, <a href="#fileset">FileSet</a>s can be specified via
nested <code>&lt;fileset&gt;</code> elements. The order in which the files
building up FileSet are added to the PATH like structure is not
defined.</p>
<pre>
    &lt;classpath&gt;
      &lt;pathelement path=&quot;${classpath}&quot; /&gt;
      &lt;fileset dir=&quot;lib&quot;&gt;
        &lt;include name=&quot;**/*.jar&quot; /&gt;
      &lt;/fileset;&gt;
      &lt;pathelement location=&quot;classes&quot; /&gt;
    &lt;/classpath&gt;
</pre>
<p>Builds a PATH which holds the value of <code>${classpath}</code>
followed by all JAR files in the <code>lib</code> directory, followed
by the <code>classes</code> directory.</p>
<p>If you want to use the same PATH like structure for several tasks,
you can define them with a <code>&lt;path&gt;</code> element at the
same level as <em>target</em>s and reference them via their
<em>id</em> attribute - see <a href="#references">References</a> for an
example.</p>
<p>A PATH like structure can include a reference to another PATH like
structure via a nested <code>&lt;path&gt;</code> elements.</p>
<pre>
    &lt;path id=&quot;base.path&quot;&gt;
      &lt;pathelement path=&quot;${classpath}&quot; /&gt;
      &lt;fileset dir=&quot;lib&quot;&gt;
        &lt;include name=&quot;**/*.jar&quot; /&gt;
      &lt;/fileset;&gt;
      &lt;pathelement location=&quot;classes&quot; /&gt;
    &lt;/path&gt;

    &lt;path id=&quot;tests.path&quot;&gt;
      &lt;path refid=&quot;base.path&quot; /&gt;
      &lt;pathelement location=&quot;testclasses&quot; /&gt;
    &lt;/path&gt;
</pre>

<h3><a name="arg">Command line arguments</a></h3>

<p>Several tasks take arguments that shall be passed to another
process on the command line. To make it easier to specify arguments
that contain space characters, nested elements can be used.</p>
<table border="1" cellpadding="2" cellspacing="0">
<tr>
  <td width="12%" valign="top"><b>Attribute</b></td>
  <td width="78%" valign="top"><b>Description</b></td>
  <td width="10%" valign="top"><b>Required</b></td>
</tr>
  <tr>
    <td valign="top">value</td> 
    <td valign="top">a single command line argument, can contain space
      characters.</td>
    <td align="center" rowspan="4">Exactly one of these.</td>
  </tr>
  <tr>
    <td valign="top">line</td> 
    <td valign="top">a space delimited list of command line arguments.</td>
  </tr>
  <tr>
    <td valign="top">file</td> 
    <td valign="top">The name of a file as a single command line
      argument. Will be replaced with the absolute filename of the file
      by Ant.</td>
  </tr>
  <tr>
    <td valign="top">path</td> 
    <td valign="top">A string that shall be treated as a PATH like
      string as a single command line argument. You can use ; or : as
      path separators and Ant will convert it to the platform's local
      conventions.</td>
  </tr>
</table>
<h4>Examples</h4>
<blockquote><pre>
  &lt;arg value=&quot;-l -a&quot; /&gt;
</pre></blockquote>
<p>is a single command line argument containing a space character.</p>
<blockquote><pre>
  &lt;arg line=&quot;-l -a&quot; /&gt;
</pre></blockquote>
<p>stands for two separate command line arguments.</p>
<blockquote><pre>
  &lt;arg path=&quot;/dir;/dir2:\dir3&quot; /&gt;
</pre></blockquote>
<p>is a single command line argument with value
<code>\dir;\dir2;\dir3</code> on DOS based systems and
<code>/dir:/dir2:/dir3</code> on Unix like systems.</p>
<h3><a name="references">References</a></h3>
<p>The <code>id</code> attribute of the buildfile's elements can be
used to refer to them. This can useful if you are going to replicate
the same snippet of XML over and over again - using a
<code>&lt;classpath&gt;</code> structure more than once for
example.</p>
<p>The following example</p>
<blockquote><pre>
&lt;project ... &gt;
  &lt;target ... &gt;
    &lt;rmic ...&gt;
      &lt;classpath&gt;
        &lt;pathelement location=&quot;lib/&quot; /&gt;
        &lt;pathelement path=&quot;${java.class.path}/&quot; /&gt;
        &lt;pathelement path=&quot;${additional.path}&quot; /&gt;
      &lt;/classpath&gt;
    &lt;/rmic&gt;
  &lt;/target&gt;

  &lt;target ... &gt;
    &lt;javac ...&gt;
      &lt;classpath&gt;
        &lt;pathelement location=&quot;lib/&quot; /&gt;
        &lt;pathelement path=&quot;${java.class.path}/&quot; /&gt;
        &lt;pathelement path=&quot;${additional.path}&quot; /&gt;
      &lt;/classpath&gt;
    &lt;/javac&gt;
  &lt;/target&gt;
&lt;/project&gt;
</pre></blockquote>
<p>could be rewritten as</p>
<blockquote><pre>
&lt;project ... &gt;
  &lt;path id=&quot;project.class.path&quot;&gt;
    &lt;pathelement location=&quot;lib/&quot; /&gt;
    &lt;pathelement path=&quot;${java.class.path}/&quot; /&gt;
    &lt;pathelement path=&quot;${additional.path}&quot; /&gt;
  &lt;/path&gt;

  &lt;target ... &gt;
    &lt;rmic ...&gt;
      &lt;classpath refid=&quot;project.class.path&quot; /&gt;
    &lt;/rmic&gt;
  &lt;/target&gt;

  &lt;target ... &gt;
    &lt;javac ...&gt;
      &lt;classpath refid=&quot;project.class.path&quot; /&gt;
    &lt;/javac&gt;
  &lt;/target&gt;
&lt;/project&gt;
</pre></blockquote>
<p>All tasks that use nested elements for <a
href="#patternset">PatternSet</a>s, <a href="#fileset">FileSet</a>s or
<a href="#path">PATH like structures</a> accept references to these
structures as well.</p>
<hr>
<h2><a name="directorybasedtasks">Directory based tasks</a></h2>
<p>Some tasks use directory trees for the task they perform. For instance, the <a
href="#javac">Javac task</a> which works upon a directory tree with .java files.
Sometimes it can be very useful to work on a subset of that directory tree. This
section describes how you can select a subset of such a directory tree.</p>
<p>Ant gives you two ways to create a subset, both of which can be used at the same
time:</p>
<ul>
  <li>Only include files/directories that match at least one pattern of a set of
    patterns</li>
  <li>Exclude files/directories that match at least one pattern a set of
    patterns</li>
</ul>
<p>When both inclusion and exclusion are used, only files/directories that match
the include patterns, and don't match the exclude patterns are used.</p>
<p>Patterns can be specified inside the buildfile via task attributes or
nested elements and via external files. Each line of the external file
is taken as pattern that is added to the list of include or exclude 
patterns.</p>
<h3>Patterns</h3>
<p>As described earlier, patterns are used for the inclusion and exclusion.
These patterns look very much like the patterns used in DOS and UNIX:</p>
<p>'*' matches zero or more characters, '?' matches one character.</p>
<p>Examples:</p>
<p>'*.java' matches '.java', 'x.java' and 'FooBar.java', but not 'FooBar.xml'
(does not end with '.java').</p>
<p>'?.java' matches 'x.java', 'A.java', but not '.java' or 'xyz.java' (both
don't have one character before '.java').</p>
<p>Combinations of '*'s and '?'s are allowed.</p>
<p>Matching is done per-directory. This means that first the first directory in
the pattern is matched against the first directory in the path to match. Then
the second directories are matched, and so on. E.g. when we have the pattern '/?abc/*/*.java'
and the path '/xabc/foobar/test.java', then first '?abc' is matched with 'xabc',
then '*' is matched with 'foobar' and finally '*.java' is matched with 'test.java'.
They all match so the path matches the pattern.</p>
<p>Too make things a bit more flexible, we add one extra feature, which makes it
possible to match multiple directory levels. This can be used to match a
complete directory tree, or a file anywhere in the directory tree. To do this, '**'
must be used as the name of a directory. When '**' is used as the name of a
directory in the pattern, it matches zero or more directories. For instance:
'/test/**' matches all files/directories under '/test/', such as '/test/x.java',
or '/test/foo/bar/xyz.html', but not '/xyz.xml'.</p>
<p>There is one &quot;shorthand&quot;, if a pattern ends with '/' or '\', then '**'
is appended. E.g. &quot;mypackage/test/&quot; is interpreted as were it &quot;mypackage/test/**&quot;.</p>
<p>Examples:</p>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top">**/CVS/*</td>
    <td valign="top">Matches all files in CVS directories, that can be located
      anywhere in the directory tree.
      <p>Matches:</p>
      <p>CVS/Repository<br>
      org/apache/CVS/Entries<br>
      org/apache/jakarta/tools/ant/CVS/Entries</p>
      <p>But not:</p>
      <p>org/apache/CVS/foo/bar/Entries ('foo/bar/' part does not match)</td>
  </tr>
  <tr>
    <td valign="top">org/apache/jakarta/**</td>
    <td valign="top">Matches all files in the org/apache/jakarta directory tree.
      <p>Matches:</p>
      <p>org/apache/jakarta/tools/ant/docs/index.html<br>
      org/apache/jakarta/test.xml</p>
      <p>But not:</p>
      <p>org/apache/xyz.java ('jakarta'/' part is missing)</td>
  </tr>
  <tr>
    <td valign="top">org/apache/**/CVS/*</td>
    <td valign="top">Matches all files in CVS directories, that are located
      anywhere in the directory tree under org/apache.
      <p>Matches:</p>
      <p>org/apache/CVS/Entries<br>
      org/apache/jakarta/tools/ant/CVS/Entries</p>
      <p>But not:</p>
      <p>org/apache/CVS/foo/bar/Entries ('foo/bar/' part does not match)</td>
  </tr>
  <tr>
    <td valign="top">**/test/**</td>
    <td valign="top">Matches all files which have a directory 'test' in their
      path, including 'test' as a filename.</td>
  </tr>
</table>
<p>When these patterns are used in inclusion and exclusion, you have a powerful
way to select just the files you want.</p>
<h3>Examples</h3>
<pre>  
&lt;copy todir=&quot;${dist}&quot; >
  &lt;fileset dir=&quot;${src}&quot; 
           includes=&quot;**/images/*&quot; 
           excludes=&quot;**/*.gif&quot; 
  /&gt;
&lt;/copy&gt;</pre>
<p>This copies all files in directories called &quot;images&quot;, that are
located in the directory tree &quot;${src}&quot; to the destination &quot;${dist}&quot;,
but excludes all &quot;*.gif&quot; files from the copy.</p>
<p> This example can also be expressed using nested elements as
<pre>
&lt;copy todir=&quot;${dist}&quot; >
  &lt;fileset dir=&quot;${src}&quot; /&gt;
    &lt;include name=&quot;**/images/*&quot;/&gt;
    &lt;exclude name=&quot;**/*.gif&quot; /&gt;
  &lt;/fileset&gt;
&lt;/copy&gt;
</pre>

<h3>Default Excludes</h3>
<p>There are a set of definitions which are excluded by default from all directory based tasks.
They are:
<pre>        &quot;**/*~&quot;,
        &quot;**/#*#&quot;,
        &quot;**/%*%&quot;,
        &quot;**/CVS&quot;,
        &quot;**/CVS/*&quot;,
        &quot;**/.cvsignore&quot;
</pre>
If you do not want these default excludes applied, you may disable them with the 
<code>defaultexcludes=&quot;no&quot;</code> attribute.</p>
<h3><a name="patternset">PatternSets</a></h3>
<p>Patterns can be grouped to sets and later be referenced by their id
attribute. They are defined via a <code>patternset</code> element -
which can appear nested into a <a href="#fileset">FileSet</a> or a
directory based task that constitutes an implicit FileSet. In addition
<code>patternset</code>s can be defined at the same level as
<code>target</code> - i.e. as children of <code>project</code></p>
<p>Patterns can be specified by nested <code>&lt;include&gt;</code> or
<code>&lt;exclude&gt;</code> elements or the following attributes.</p>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
  </tr>
</table>
<h4>Examples</h4>
<blockquote><pre>
&lt;patternset id=&quot;non.test.sources&quot; &gt;
  &lt;include name=&quot;**/*.java&quot; /&gt;
  &lt;exclude name=&quot;**/*Test*&quot; /&gt;
&lt;/patternset&gt;
</pre></blockquote>
<p>Builds a set of patterns, that matches all <code>.java</code> files
that do not contain the text <code>Test</code> in their name. This set
can be <a href="#references">referred</a> to via
<code>&lt;patternset refid=&quot;non.test.sources&quot;
/&gt;</code> by tasks that support this feature or by FileSets.</p>
<h3><a name="fileset">FileSets</a></h3>
<p>FileSets are groups of files. These files can be found in a
directory tree starting in a base directory and are matched by
patterns taken from a number of <a
href="#patternset">PatternSets</a>. FileSets can appear inside task
that support this feature or at the same level as <code>target</code>
- i.e. as children of <code>project</code>.</p>
<p>PatternSets can be specified as nested
<code>&lt;patternset&gt;</code> 
elements. In addition FileSet holds an implicit PatternSet and
supports the nested <code>&lt;include&gt;</code> and
<code>&lt;exclude&gt;</code> elements of PatternSet directly as well
as PatternSet's attributes.</p>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">dir</td>
    <td valign="top">The root of the directory tree of this FileSet.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h4>Examples</h4>
<blockquote><pre>
&lt;fileset dir=&quot;${server.src}&quot; &gt;
  &lt;patternset id=&quot;non.test.sources&quot; &gt;
    &lt;include name=&quot;**/*.java&quot; /&gt;
    &lt;exclude name=&quot;**/*Test*&quot; /&gt;
  &lt;/patternset&gt;
&lt;/fileset&gt;
</pre></blockquote>
<p>Groups all files in directory <code>${server.src}</code> that are Java
source files and don't have the text <code>Test</code> in their
name.</p>
<blockquote><pre>
&lt;fileset dir=&quot;${client.src}&quot; &gt;
  &lt;patternset refid=&quot;non.test.sources&quot; /&gt;
&lt;/fileset&gt;
</pre></blockquote>
<p>Groups all files in directory <code>${client.src}</code> using the
same patterns as the example before.</p>
<hr>
<h2><a name="tasks">Built in tasks</a></h2>
<ul>
  <li><a href="#ant">Ant</a></li>
  <li><a href="#antcall">AntCall</a></li>
  <li><a href="#antstructure">AntStructure</a></li>
  <li><a href="#available">Available</a></li>
  <li><a href="#chmod">Chmod</a></li>
  <li><a href="#copy">Copy</a></li>
  <li><a href="#copydir">Copydir</a></li>
  <li><a href="#copyfile">Copyfile</a></li>
  <li><a href="#cvs">Cvs</a></li>
  <li><a href="#delete">Delete</a></li>
  <li><a href="#deltree">Deltree</a></li>
  <li><a href="#echo">Echo</a></li>
  <li><a href="#exec">Exec</a></li>
  <li><a href="#execon">ExecOn</a></li>
  <li><a href="#fail">Fail</a></li>
  <li><a href="#filter">Filter</a></li>
  <li><a href="#fixcrlf">FixCRLF</a></li>
  <li><a href="#genkey">GenKey</a></li>
  <li><a href="#get">Get</a></li>
  <li><a href="#gunzip">GUnzip</a></li>
  <li><a href="#gzip">GZip</a></li>
  <li><a href="#jar">Jar</a></li>
  <li><a href="#java">Java</a></li>
  <li><a href="#javac">Javac</a></li>
  <li><a href="#javadoc">Javadoc/Javadoc2</a></li>
  <li><a href="#mail">Mail</a></li>
  <li><a href="#mkdir">Mkdir</a></li>
  <li><a href="#move">Move</a></li>
  <li><a href="#patch">Patch</a></li>
  <li><a href="#property">Property</a></li>
  <li><a href="#rename">Rename</a></li>
  <li><a href="#replace">Replace</a></li>
  <li><a href="#rmic">Rmic</a></li>
  <li><a href="#signjar">SignJar</a></li>
  <li><a href="sql.html">Sql</a></li>
  <li><a href="#style">Style</a></li>
  <li><a href="#tar">Tar</a></li>
  <li><a href="#taskdef">Taskdef</a></li>
  <li><a href="#touch">Touch</a></li>
  <li><a href="#tstamp">Tstamp</a></li>
  <li><a href="#unzip">Unjar</a></li>
  <li><a href="#untar">Untar</a></li>
  <li><a href="#unzip">Unwar</a></li>
  <li><a href="#unzip">Unzip</a></li>
  <li><a href="#uptodate">Uptodate</a></li>
  <li><a href="#war">War</a></li>
  <li><a href="#zip">Zip</a></li>
</ul>
<hr>
<h2><a name="ant">Ant</a></h2>
<h3>Description</h3>
<p>Runs Ant on a supplied buildfile. This can be used to build subprojects.</p>
<p>When the <i>antfile</i> attribute is omitted, the file &quot;build.xml&quot;
in the supplied directory (<i>dir</i> attribute) is used.</p>
<p>If no target attribute is supplied, the default target of the new project is
used.</p>
<p>The properties of the current project will be available in the new project.
These properties will override the properties that are set in the new project.
(See also the <a href="#property">properties task</a>). You can set properties
in the new project from the old project by using nested property tags. This
allows you to parameterize your subprojects.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">antfile</td>
    <td valign="top">the buildfile to use. Defaults to &quot;build.xml&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">dir</td>
 	<td valign="top">the directory to use as a basedir for the new Ant project. 
					 Defaults to the current directory.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">target</td>
    <td valign="top">the target of the new Ant project that should be executed.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">output</td>
    <td valign="top">Filename to write the ant output to.
    </td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>
  &lt;ant antfile=&quot;subproject/subbuild.xml&quot; dir=&quot;subproject&quot; target=&quot;compile&quot; /&gt;

  &lt;ant dir=&quot;subproject&quot; /&gt;

  &lt;ant antfile=&quot;subproject/property_based_subbuild.xml&quot;&gt;
    &lt;property name=&quot;param1&quot; value=&quot;version 1.x&quot; /&gt;
    &lt;property file=&quot;config/subproject/default.properties&quot; /&gt;
  &lt;/ant&gt;
</pre>
<hr>
<h2><a name="antcall">AntCall</a></h2>
<h3>Description</h3>
<p>Call another target within the same build-file optionally specifying some
properties (param's in this context)</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">target</td>
    <td valign="top">The target to execute.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>param</h4>
<p>Specifies the properties to set before running the specified target. See <a
href="#property">property</a> for usage guidelines.</p>
<h3>Examples</h3>
<pre>
  &lt;target name=&quot;default&quot;&gt;
    &lt;antcall target=&quot;doSomethingElse&quot;&gt;
      &lt;param name=&quot;param1&quot; value=&quot;value&quot;/&gt;
    &lt;/antcall&gt;
  &lt;/target&gt;

  &lt;target name=&quot;doSomethingElse&quot;&gt;
    &lt;echo message=&quot;param1=${param1}&quot;/&gt;
  &lt;/target&gt;
</pre>
<p>Will run the target 'doSomethingElse' and echo 'param1=value'.</p>
<hr>
<h2><a name="antstructure">AntStructure</a></h2>
<h3>Description</h3> 
<p>Generates a DTD for Ant build files which contains information
about all tasks currently known to Ant.</p> 
<p>Note that the DTD generated by this task is incomplete, you can
always add XML entities using <a
href="#taskdef"><code>&lt;taskdef&gt;</code></a>. See <a
href="http://www.sdv.fr/pages/casa/html/ant-dtd.en.html">here</a> for
a way to get around this problem.</p>
<p>This task doesn't know about required attributes, all will be
listed as <code>#IMPLIED</code>.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">output</td>
    <td valign="top">file to write the DTD to.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote><pre>
&lt;antstructure output=&quot;project.dtd&quot; /&gt;
</pre></blockquote>
<hr>
<h2><a name="available">Available</a></h2>
<h3>Description</h3>
<p>Sets a property if a resource is available at runtime. This resource can be a
file resource, a class in classpath or a JVM system resource.</p>
<p>If the resource is present, the property value is set to true by
default, otherwise the property is not set. You can set the value to
something specific by using the value attribute.</p>
<p>Normally, this task is used to set properties that are useful to avoid target
execution depending on system parameters.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">property</td>
    <td valign="top">the name of the property to set.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">value</td>
    <td valign="top">the value to set the property to. Defaults to &quot;true&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">classname</td>
    <td valign="top">the class to look for in classpath.</td>
    <td valign="middle" align="center" rowspan="3">Yes</td>
  </tr>
  <tr>
    <td valign="top">resource</td>
    <td valign="top">the resource to look for in the JVM</td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">the file to look for.</td>
  </tr>
  <tr>
    <td valign="top">classpath</td> <td valign="top">the classpath to
      use when looking up <code>classname</code>.</td> <td
    align="center" valign="top">No</td>
  </tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>classpath</h4>
<p><code>Available</code>'s <em>classpath</em> attribute is a <a
href="#path">PATH like structure</a> and can also be set via a nested
<em>classpath</em> element.</p>
<h3>Examples</h3>
<pre>  &lt;available classname=&quot;org.whatever.Myclass&quot; property=&quot;Myclass.present&quot; /&gt;</pre>
<p>sets the property <code><i>Myclass.present</i></code> to the value &quot;true&quot;
if the <i>org.whatever.Myclass</i> is found in Ant's classpath.</p>
<hr>
<h2><a name="chmod">Chmod</a></h2>
<h3>Description</h3>
<p>Changes the permissions of a file or all files inside specified directories. Right now it has effect only under Unix.
The permissions are also UNIX style, like the argument for the chmod command.</p>
<p>See the section on <a href="#directorybasedtasks">directory based
tasks</a>, on how the inclusion/exclusion of files works, and how to
write patterns.</p>
<p>This task holds an implicit <a href="#fileset">FileSet</a> and
supports all of FileSet's attributes and nested elements
directly. More FileSets can be specified using nested
<code>&lt;fileset&gt;</code> elements.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">the file or single directory of which the permissions 
      must be changed.</td>
    <td valign="top" valign="middle" rowspan="2">exactly one of the two or nested <code>&lt;fileset&gt;</code> elements.</td>
  </tr>
  <tr>
    <td valign="top">dir</td>
    <td valign="top">the directory which holds the files whose permissions 
      must be changed.</td>
  </tr>
  <tr>
    <td valign="top">perm</td>
    <td valign="top">the new permissions.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">parallel</td>
    <td valign="top">process all specified files using a single
      <code>chmod</code> command. Defaults to true.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">type</td>
    <td valign="top">One of <em>file</em>, <em>dir</em> or
      <em>both</em>. If set to <em>file</em>, only the permissions of
      plain files are going to be changed. If set to <em>dir</em>, only
      the directories are considered.</td>
    <td align="center" valign="top">No, default is <em>file</em></td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;chmod file=&quot;${dist}/start.sh&quot; perm=&quot;ugo+rx&quot;
  /&gt;</code></p>
</blockquote>
<p>makes the &quot;start.sh&quot; file readable and executable for anyone on a
UNIX system.</p>
<blockquote>
<pre>
    &lt;chmod dir=&quot;${dist}/bin&quot; perm=&quot;ugo+rx&quot; includes=&quot;**/*.sh&quot; /&gt;
</pre>
</blockquote>
<p>makes all &quot;.sh&quot; files below <code>${dist}/bin</code>
readable and executable for anyone on a UNIX system.</p>
<blockquote>
<pre>
&lt;chmod perm=&quot;g+w&quot; /&gt;
  &lt;fileset dir=&quot;shared/sources1&quot; &gt;
    &lt;exclude name=&quot;**/trial/**&quot; /&gt;
  &lt;/fileset&gt;
  &lt;fileset refid=&quot;other.shared.sources&quot; /&gt;
&lt;/chmod&gt;
</pre>
</blockquote>
<p>makes all files below <code>shared/sources1</code> (except those
below any directory named trial) writable for members of the same
group on a UNIX system. In addition all files belonging to a FileSet
with <code>id</code> <code>other.shared.sources</code> get the same
permissions.</p>
<hr>
<h2><a name="copy">Copy</a></h2>
<h3>Description</h3>
<p>Copies a file or Fileset to a new file or directory.  Files are
only copied if the source file is newer than the destination file,
or when the destination file does not exist.  However, you can explicitly 
overwrite files with the <var>overwrite</var> attribute.</p>
<p><a href="#fileset">FileSet</a>s are used to select files to copy.  
To use a fileset, the <var>todir</var> attribute must be set.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">The file to copy.</td>
    <td valign="top" align="center">One of either <var>file</var> or 
    at least one nested fileset element.</td>
  </tr>
  <tr>
    <td valign="top">tofile</td>
    <td valign="top">The file to copy to.</td>
    <td valign="top" align="center" rowspan="2">With the <var>file</var> attribute, 
    either <var>tofile</var> or <var>todir</var> can be used.  With nested filesets, 
    only <var>todir</var> is allowed.</td>
  </tr>
  <tr>
    <td valign="top">todir</td>
    <td valign="top">The directory to copy to.</td>
  </tr>
  <tr>
    <td valign="top">overwrite</td>
    <td valign="top">Overwrite existing files even if the destination
      files are newer. Defaults to &quot;no&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">filtering</td>
    <td valign="top">Indicates whether token filtering should take place during
      the copy. Defaults to &quot;no&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">flatten</td>
    <td valign="top">Ignore directory structure of source directory,
      copy all files into a single directory, specified by the <var>todir</var>
      attribute. Defaults to &quot;no&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includeEmptyDirs</td>
	 <td valign="top">Copy empty directories included with the nested FileSet(s).
	   Defaults to &quot;yes&quot;.</td>
	 <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<p><b>Copy a single file</b></p>
<pre>
  &lt;copy file=&quot;myfile.txt&quot; tofile=&quot;mycopy.txt&quot; /&gt;
</pre>
<p><b>Copy a file to a directory</b></p>
<pre>
  &lt;copy file=&quot;myfile.txt&quot; todir=&quot;../some/dir/tree&quot; /&gt;
</pre>
<p><b>Copy a directory to another directory</b></p>
<pre>
  &lt;copy todir=&quot;../new/dir&quot;&gt;
    &lt;fileset dir=&quot;src_dir&quot;/&gt;
  &lt;/copy&gt;
</pre>
<p><b>Copy a set of files to a directory</b></p>
<pre>
  &lt;copy todir=&quot;../dest/dir&quot; &gt;
    &lt;fileset dir=&quot;src_dir&quot &gt;
      &lt;exclude name=&quot;**/*.java&quot; /&gt;
    &lt;/fileset&gt;
  &lt;/copy&gt;

  &lt;copy todir=&quot;../dest/dir&quot; &gt;
    &lt;fileset dir=&quot;src_dir&quot excludes=&quot;**/*.java&quot; /&gt;
  &lt;/copy&gt;
</pre>
<hr>
<h2><a name="copydir">Copydir</a></h2>
<h3><i>Deprecated</i></h3>
<p><i>This task has been deprecated.  Use the Copy task instead.</i></p>
<h3>Description</h3>
<p>Copies a directory tree from the source to the destination.</p>
<p>It is possible to refine the set of files that are being copied. This can be
done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and <i>defaultexcludes</i>
attributes. With the <i>includes</i> or <i>includesfile</i> attribute you specify the files you want to
have included by using patterns. The <i>exclude</i> or <i>excludesfile</i> attribute is used to specify
the files you want to have excluded. This is also done with patterns. And
finally with the <i>defaultexcludes</i> attribute, you can specify whether you
want to use default exclusions or not. See the section on <a
href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns.</p>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>src</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">src</td>
    <td valign="top">the directory to copy.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">the directory to copy to.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">filtering</td>
    <td valign="top">indicates whether token filtering should take place during
      the copy</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">flatten</td>
    <td valign="top">ignore directory structure of source directory,
      copy all files into a single directory - specified by the dest
      attribute (default is false).</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">forceoverwrite</td>
    <td valign="top">overwrite existing files even if the destination
      files are newer (default is false).</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;copydir src=&quot;${src}/resources&quot;
           dest=&quot;${dist}&quot;
  /&gt;</pre>
<p>copies the directory <code>${src}/resources</code> to <code>${dist}</code>.</p>
<pre>  &lt;copydir src=&quot;${src}/resources&quot;
           dest=&quot;${dist}&quot;
           includes=&quot;**/*.java&quot;
           excludes=&quot;**/Test.java&quot;
  /&gt;</pre>
<p>copies the directory <code>${src}/resources</code> to <code>${dist}</code>
recursively. All java files are copied, except for files with the name <code>Test.java</code>.</p>
<pre>  &lt;copydir src=&quot;${src}/resources&quot;
           dest=&quot;${dist}&quot;
           includes=&quot;**/*.java&quot;
           excludes=&quot;mypackage/test/**&quot; /&gt;</pre>
<p>copies the directory <code>${src}/resources</code> to <code>${dist}</code>
recursively. All java files are copied, except for the files under the <code>mypackage/test</code>
directory.</p>
<hr>
<h2><a name="copyfile">Copyfile</a></h2>
<h3><i>Deprecated</i></h3>
<p><i>This task has been deprecated.  Use the Copy task instead.</i></p>
<h3>Description</h3>
<p>Copies a file from the source to the destination. The file is only copied if
the source file is newer than the destination file, or when the destination file
does not exist.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">src</td>
    <td valign="top">the filename of the file to copy.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">the filename of the file where to copy to.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">filtering</td>
    <td valign="top">indicates whether token filtering should take place during
      the copy</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">forceoverwrite</td>
    <td valign="top">overwrite existing files even if the destination
      files are newer (default is false).</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;copyfile src=&quot;test.java&quot; dest=&quot;subdir/test.java&quot;
  /&gt;</code></p>
  <p><code>&lt;copyfile src=&quot;${src}/index.html&quot; dest=&quot;${dist}/help/index.html&quot;
  /&gt;</code></p>
</blockquote>
<hr>
<h2><a name="cvs">Cvs</a></h2>
<h3>Description</h3>
<p>Handles packages/modules retrieved from a 
<a href="http://www.cyclic.com/">CVS</a> repository.</p>
<p>When doing automated builds, the <a href="#get">get task</a> should be
preferred over the <i>checkout</i> command, because of speed.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">command</td>
    <td valign="top">the CVS command to execute.</td>
    <td align="center" valign="top">No, default &quot;checkout&quot;</td>
  </tr>
  <tr>
    <td valign="top">cvsRoot</td>
    <td valign="top">the CVSROOT variable.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">the directory where the checked out files should be placed.</td>
    <td align="center" valign="top">No, default is project's basedir.</td>
  </tr>
  <tr>
    <td valign="top">package</td>
    <td valign="top">the package/module to check out.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">tag</td>
    <td valign="top">the tag of the package/module to check out.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">date</td>
    <td valign="top">Use the most recent revision no later than the given date</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">quiet</td>
    <td valign="top">suppress informational messages.</td>
    <td align="center" valign="top">No, default &quot;false&quot;</td>
  </tr>
  <tr>
    <td valign="top">noexec</td>
    <td valign="top">report only, don't change any files.</td>
    <td align="center" valign="top">No, default &quot;false&quot;</td>
  </tr>
  <tr>
    <td valign="top">output</td>
    <td valign="top">the file to direct standard output from the command.</td>
    <td align="center" valign="top">No, default output to ANT Log as MSG_INFO.</td>
  </tr>
  <tr>
    <td valign="top">error</td>
    <td valign="top">the file to direct standard error from the command.</td>
    <td align="center" valign="top">No, default error to ANT Log as MSG_WARN.</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;cvs cvsRoot=&quot;:pserver:anoncvs@jakarta.apache.org:/home/cvspublic&quot;
       package=&quot;jakarta-tools&quot;
       dest=&quot;${ws.dir}&quot;
  /&gt;</pre>
<p>checks out the package/module &quot;jakarta-tools&quot; from the CVS
repository pointed to by the cvsRoot attribute, and stores the files in &quot;${ws.dir}&quot;.</p>
<pre>  &lt;cvs dest=&quot;${ws.dir}&quot; command=&quot;update&quot; /&gt;</pre>
<p>updates the package/module that has previously been checked out into
&quot;${ws.dir}&quot;.</p>
<hr>
<h2><a name="delete">Delete</a></h2>
<h3>Description</h3>
<p>Deletes either a single file, all files in a specified directory and its 
sub-directories, or a set of files specified by one or more <a href="#fileset">FileSet</a>s.
When specifying a set of files, empty directories are <em>not</em> removed.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">The file to delete.</td>
    <td align="center" valign="middle" rowspan="2">at least one of the two</td>
  </tr>
  <tr>
    <td valign="top">dir</td>
    <td valign="top">The directory to delete files from.</td>
  </tr>
  <tr>
    <td valign="top">verbose</td>
    <td valign="top">Show name of each deleted file (&quot;true&quot;/&quot;false&quot;).
	 Default is &quot;false&quot; when omitted.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top"><i>Deprecated.</i>  Comma separated list of patterns of files that must be
      deleted. All files are in the current directory 
      and any sub-directories are deleted when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top"><i>Deprecated.</i>  The name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top"><i>Deprecated.</i>  Comma separated list of patterns of files that must be
      excluded from the deletion list. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top"><i>Deprecated.</i>  The name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top"><i>Deprecated.</i>  Indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;delete file=&quot;/lib/ant.jar&quot; /&gt;</pre>
<p>deletes the file <code>/lib/ant.jar</code>.</p>
<pre>  &lt;delete dir=&quot;lib&quot; /&gt;</pre>
<p>deletes all files in the <code>/lib</code> directory.</p>
<pre>  &lt;delete&gt;
    &lt;fileset dir=&quot;.&quot; includes=&quot;**/*.bak&quot; /&gt;
  &lt;/delete&gt;
</pre>
<p>deletes all files with the extension &quot;<code>.bak</code>&quot from the current directory 
and any sub-directories.</p>
<hr>
<h2><a name="deltree">Deltree</a></h2>
<h3><i>Deprecated</i></h3>
<p><i>This task has been deprecated.  Use the Delete task instead.</i></p>
<h3>Description</h3>
<p>Deletes a directory with all its files and subdirectories.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">dir</td>
    <td valign="top">the directory to delete.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;deltree dir=&quot;dist&quot; /&gt;</pre>
<p>deletes the directory <code>dist</code>, including its files and
subdirectories.</p>
<pre>  &lt;deltree dir=&quot;${dist}&quot; /&gt;</pre>
<p>deletes the directory <code>${dist}</code>, including its files and
subdirectories.</p>
<hr>
<h2><a name="echo">Echo</a></h2>
<h3>Description</h3>
<p>Echoes a message to System.out or a file.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">message</td>
    <td valign="top">the message to echo.</td>
    <td valign="top" align="center">Yes, unless data is included in a
      character section within this element.</td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">the file to write the message to.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">append</td>
    <td valign="top">Append to an existing file?</td>
    <td valign="top" align="center">No - default is false.</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;echo message=&quot;Hello world&quot; /&gt;</pre>
<pre>  
&lt;echo&gt;
This is a longer message stretching over
two lines.
&lt;/echo&gt;
</pre>
<hr>
<h2><a name="exec">Exec</a></h2>
<h3>Description</h3>
<p>Executes a system command. When the <i>os</i> attribute is specified, then
the command is only executed when Ant is run on one of the specified operating
systems.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">command</td>
    <td valign="top">the command to execute with all command line
      arguments. <b>deprecated, use executable and nested
      <code>&lt;arg&gt;</code> elements instead</b>.</td>
    <td align="center" rowspan="2">Exactly one of the two.</td>
  </tr>
  <tr>
    <td valign="top">executable</td>
    <td valign="top">the command to execute without any command line
      arguments.</td>
  </tr>
  <tr>
    <td valign="top">dir</td>
    <td valign="top">the directory in which the command should be executed.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">os</td>
    <td valign="top">list of Operating Systems on which the command may be
      executed.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">output</td>
    <td valign="top">the file to which the output of the command should be
      redirected.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">timeout</td>
    <td valign="top">Stop the command if it doesn't finish within the
      specified time (given in milliseconds).</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">failonerror</td>
    <td valign="top">Stop the buildprocess if the command exits with a
      returncode other than 0.</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;exec dir=&quot;${src}&quot; executable=&quot;dir&quot; os=&quot;windows&quot;
  output=&quot;dir.txt&quot; /&gt;</code></p>
</blockquote>
<h3>Parameters specified as nested elements</h3>
<h4>arg</h4>
<p>Command line arguments should be specified as nested
<code>&lt;arg&gt;</code> elements. See <a
href="index.html#arg">Command line arguments</a>.</p>
<h4><a name="env">env</a></h4>
<p>It is possible to specify environment variables to pass to the
system command via nested <code>&lt;env&gt;</code> elements.</p>
<p>Please note that the environment of the current Ant process is
<b>not</b> passed to the system command if you specify variables using
<code>&lt;env&gt;</code>.</p>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">key</td>
    <td valign="top">The name of the environment variable.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">value</td>
    <td valign="top">The literal value for the environment variable.</td>
    <td align="center" rowspan="3">Exactly one of these.</td>
  </tr>
  <tr>
    <td valign="top">path</td>
    <td valign="top">The value for a PATH like environment
      variable. You can use ; or : as path separators and Ant will
      convert it to the platform's local conventions.</td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">The value for the environment variable. Will be
      replaced by the absolute filename of the file by Ant.</td>
  </tr>
</table>
<h5>Examples</h5>
<blockquote><pre>
&lt;exec executable=&quot;emacs&quot; &gt;
  &lt;env key=&quot;DISPLAY&quot; value=&quot;:1.0&quot; /&gt;
&lt;/exec&gt;
</pre></blockquote>
<p>starts <code>emacs</code> on display 1 of the X Window System.</p>
<blockquote><pre>
&lt;exec ... &gt;
  &lt;env key=&quot;PATH&quot; path=&quot;${java.library.path}:${basedir}/bin&quot; /&gt;
&lt;/exec&gt;
</pre></blockquote>
<p>adds <code>${basedir}/bin</code> to the <code>PATH</code> of the
system command.</p>
<p><b>Note:</b> Although it may work for you to specify arguments using 
a simple arg-element and seperate them by spaces it may fail if you switch to
a newer version of the JDK. JDK &lt; 1.2 will pass these as separate arguments
to the program you are calling, JDK &gt;= 1.2 will pass them as a single 
argument and cause most calls to fail.</p>
<p><b>Note2:</b> If you are using Ant on Windows and a new DOS-Window pops up
for every command which is excuted this may be a problem of the JDK you are using.
This problem may occur with all JDK's &lt; 1.2.</p>
<hr>
<h2><a name="execon">ExecOn</a></h2>
<h3>Description</h3>
<p>Executes a system command. When the <i>os</i> attribute is specified, then
the command is only executed when Ant is run on one of the specified operating
systems.</p>
<p>The files and/or directories of a number of <a
href="#fileset">FileSet</a>s are passed as arguments to the system
command. At least one nested <code>&lt;fileset&gt;</code> is required.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">executable</td>
    <td valign="top">the command to execute without any command line
      arguments.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">dir</td>
    <td valign="top">the directory in which the command should be executed.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">os</td>
    <td valign="top">list of Operating Systems on which the command may be
      executed.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">output</td>
    <td valign="top">the file to which the output of the command should be
      redirected.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">timeout</td>
    <td valign="top">Stop the command if it doesn't finish within the
      specified time (given in milliseconds).</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">failonerror</td>
    <td valign="top">Stop the buildprocess if the command exits with a
      returncode other than 0.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">parallel</td>
    <td valign="top">Run the command only once, appending all files as
      arguments. Defaults to true. If false, command will be executed
      once for every file.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">type</td>
    <td valign="top">One of <em>file</em>, <em>dir</em> or
      <em>both</em>. If set to <em>file</em>, only the names of plain
      files will be sent to the command. If set to <em>dir</em>, only
      the names of directories are considered.</td>
    <td align="center" valign="top">No, default is <em>file</em></td>
  </tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>fileset</h4>
<p>You can use any number of nested <code>&lt;fileset&gt;</code>
elements to define the files for this task and refer to
<code>&lt;fileset&gt;</code>s defined elsewhere.</p>
<h4>arg</h4>
<p>Command line arguments should be specified as nested
<code>&lt;arg&gt;</code> elements. See <a
href="index.html#arg">Command line arguments</a>.</p>
<h4>env</h4>
<p>It is possible to specify environment variables to pass to the
system command via nested <code>&lt;env&gt;</code> elements. See the
description in the section about <a href="#env">exec</a></p>
<p>Please note that the environment of the current Ant process is
<b>not</b> passed to the system command if you specify variables using
<code>&lt;env&gt;</code>.</p>
<h3>Examples</h3>
<blockquote><pre>
&lt;execon executable=&quot;ls&quot; &gt;
  &lt;arg value=&quot;-l&quot; /&gt;
  &lt;fileset dir=&quot;/tmp&quot;&gt;
    &lt;patternset&gt;
      &lt;exclude name=&quot;**/*.txt&quot; /&gt;
    &lt;/patternset&gt;
  &lt;/fileset&gt;
  &lt;fileset refid=&quot;other.files&quot; /&gt;
&lt;/execon&gt;
</pre></blockquote>
<p>invokes <code>ls -l</code>, adding the absolute filenames of all
files below <code>/tmp</code> not ending in <code>.txt</code> and all
files of the FileSet with <code>id</code> <code>other.files</code> to
the command line.</p>
<hr>
<h2><a name="fail">Fail</a></h2>
<h3>Description</h3>
<p>Exits the current build (just throwing a BuildException), optionally printing additional information.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">message</td>
    <td valign="top">A message giving further information on why the build exited</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;fail/&gt;</pre>
<p>will exit the current build with no further information given.
<pre>
BUILD FAILED

build.xml:4: No message
</pre>
</p>
<pre>  &lt;fail message=&quot;Something wrong here.&quot;/&gt;</pre>
<p>will exit the current build and print something like the following to whereever
your output goes:
<pre>
BUILD FAILED

build.xml:4: Something wrong here.
</pre>
</p>
<hr>
<h2><a name="filter">Filter</a></h2>
<h3>Description</h3>
<p>Sets a token filter for this project. Token filters are used by all tasks
that perform file copying operations through the Project commodity methods.</p>
<p>Note: the token string must not contain the separators chars (@).</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">token</td>
    <td valign="top">the token string without @</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">value</td>
    <td valign="top">the string that should be put to replace the token when the
      file is copied</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;filter token=&quot;year&quot; value=&quot;2000&quot; /&gt;
  &lt;copy todir=&quot;${dest.dir}&quot;&gt;
    &lt;fileset dir=&quot;${src.dir}&quot; /&gt;
  &lt;/copy&gt;</pre> 
<p>will copy recursively all the files from the <i>src.dir</i> directory into
the <i>dest.dir</i> directory replacing all the occurencies of the string <i>@year@</i>
with <i>2000.</i></p>
<hr>
<h2><a name="fixcrlf">FixCRLF</a></h2>
<h3>Description</h3>
<p>Adjusts a text file to local.</p>
<p>It is possible to refine the set of files that are being adjusted. This can be
done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and <i>defaultexcludes</i>
attributes. With the <i>includes</i> or <i>includesfile</i> attribute you specify the files you want to
have included by using patterns. The <i>exclude</i> or <i>excludesfile</i> attribute is used to specify
the files you want to have excluded. This is also done with patterns. And
finally with the <i>defaultexcludes</i> attribute, you can specify whether you
want to use default exclusions or not. See the section on <a
href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns.</p>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>srcdir</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">srcDir</td>
    <td valign="top">Where to find the files to be fixed up.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">destDir</td>
    <td valign="top">Where to place the corrected files.  Defaults to
      srcDir (replacing the original file)</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">cr</td>
    <td valign="top">Specifies how carriage return (CR) characters are to
      be handled.  Valid values for this property are:
      <ul>
      <li>add: ensure that there is a CR before every LF
      <li>asis: leave CR characters alone
      <li>remove: remove all CR characters
      </ul>
      Default is based on the platform on which you are running this task.
      For Unix platforms, the default is remove.  For DOS based systems
      (including Windows), the default is add.
      <p>
      Note: Unless this property is specified as &quot;asis&quot;, extra CR characters
      which do not precede a LF will be removed.
      </td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">tab</td>
    <td valign="top">Specifies how tab characters are to be handled.  Valid
      values for this property are:
      <ul>
      <li>add: convert sequences of spaces which span a tab stop to tabs
      <li>asis: leave tab and space characters alone
      <li>remove: convert tabs to spaces
      </ul>
      Default for this parameter is &quot;asis&quot;.
      <p>
      Note: Unless this property is specified as &quot;asis&quot;, extra spaces and
      tabs after the last non-whitespace character on the line will be removed.
      </td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">tablength</td>
    <td valign="top">The number of characters a TAB stop corresponds to. 
      Must be a positive power of 2, default for this parameter is 8.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">eof</td>
    <td valign="top">Specifies how DOS end of file (control-Z) characters are
      to be handled.  Valid values for this property are:
      <ul>
      <li>add: ensure that there is an EOF character at the end of the file
      <li>asis: leave EOF characters alone
      <li>remove: remove any EOF character found at the end
      </ul>
      Default is based on the platform on which you are running this task.
      For Unix platforms, the default is remove.  For DOS based systems
      (including Windows), the default is asis.
      </td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;fixcrlf srcdir=&quot;${src}&quot;
       cr=&quot;remove&quot; eof=&quot;remove&quot;
       includes=&quot;**/*.sh&quot;
  /&gt;</pre>
<p>Removes carriage return and eof characters from the shell scripts.  Tabs and
spaces are left as is.
<pre>  &lt;fixcrlf srcdir=&quot;${src}&quot;
       cr=&quot;add&quot;
       includes=&quot;**/*.bat&quot;
  /&gt;</pre>
<p>Ensures that there are carriage return characters prior to evey line feed.
Tabs and spaces are left as is.
EOF characters are left alone if run on
DOS systems, and are removed if run on Unix systems.</p>
<pre>  &lt;fixcrlf srcdir=&quot;${src}&quot;
       tabs=&quot;add&quot;
       includes=&quot;**/Makefile&quot;
  /&gt;</pre>
<p>Adds or removes CR characters to match local OS conventions, and
converts spaces to tabs when appropriate.  EOF characters are left alone if
run on DOS systems, and are removed if run on Unix systems.
Many versions of make require tabs prior to commands.</p>
<pre>  &lt;fixcrlf srcdir=&quot;${src}&quot;
       tabs=&quot;remove&quot;
       includes=&quot;**/README*&quot;
  /&gt;</pre>
<p>Adds or removes CR characters to match local OS conventions, and
converts all tabs to spaces.  EOF characters are left alone if run on
DOS systems, and are removed if run on Unix systems.
You never know what editor a user will use to browse README's.</p>
<hr>
<h2><a name="genkey">GenKey</a></h2>
<h3>Description</h3>
<p>Generates a key in keystore.</p>

<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">alias</td>
    <td valign="top">the alias to add under</td>
    <td valign="top" align="center">Yes.</td>
  </tr>
  <tr>
    <td valign="top">storepass</td>
    <td valign="top">password for keystore integrity.</td>
    <td valign="top" align="center">Yes.</td>
  </tr>
  <tr>
    <td valign="top">keystore</td>
    <td valign="top">keystore location</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">storetype</td>
    <td valign="top">keystore type</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">keypass</td>
    <td valign="top">password for private key (if different)</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">sigalg</td>
    <td valign="top">the algorithm to use in signing</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">keyalg</td>
    <td valign="top">the method to use when generating name-value pair</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">verbose</td>
    <td valign="top">(true | false) verbose output when signing</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">dname</td>
    <td valign="top">The distinguished name for entity</td>
    <td valign="top" align="center">Yes if dname element unspecified</td>
  </tr>
  <tr>
    <td valign="top">validity</td>
    <td valign="top">(integer) indicates how many days certificate is valid</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">keysize</td>
    <td valign="top">(integer) indicates the size of key generated</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>

<p>Alternatively you can specify the distinguished name by creating a sub-element named dname and populating it with param elements that have a name and a value. When using the subelement it is automatically encoded properly and , are replace
<p>The following two examples are identical: </p>

<h3>Examples</h3>
<blockquote>
  <p><code>&lt;genkey alias=&quot;apache-group&quot; storepass=&quot;secret&quot; 
  dname=&quot;CN=Ant Group, OU=Jakarta Division, O=Apache.org, C=US&quot; /&gt;</code></p>
</blockquote>

<blockquote>
  <pre><code>&lt;genkey alias=&quot;apache-group&quot; storepass=&quot;secret&quot; &gt;
  &lt;dname&gt;
    &lt;param name=&quot;CN&quot; value=&quot;Ant Group&quot;/&gt;
    &lt;param name=&quot;OU&quot; value=&quot;Jakarta Division&quot;/&gt;
    &lt;param name=&quot;O&quot;  value=&quot;Apache.Org&quot;/&gt;
    &lt;param name=&quot;C&quot;  value=&quot;US&quot;/&gt;
  &lt;/dname&gt;
&lt;/genkey&gt;</code></pre>
</blockquote>
<hr>
<h2><a name="get">Get</a></h2>
<h3>Description</h3>
<p>Gets a file from a URL. When the verbose option is &quot;on&quot;, this task
displays a '.' for every 100 Kb retrieved.</p>
<p>This task should be preferred above the <a href="#cvs">CVS task</a> when
doing automated builds. CVS is significantly slower than loading a compressed
archive with http/ftp.</p>

The <i>usetimestamps</i> option enables you to control downloads so that the remote file is
only fetched if newer than the local copy. If there is no local copy, the download always takes 
place. When a file is downloaded, the timestamp of the downloaded file is set to the remote timestamp,
if  the JVM is Java1.2 or later. 
NB: This timestamp facility only works on downloads using the HTTP protocol. 
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">src</td>
    <td valign="top">the URL from which to retrieve a file.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">the file where to store the retrieved file.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">verbose</td>
    <td valign="top">show verbose progress information (&quot;on&quot;/&quot;off&quot;).</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">ignoreerrors</td>
    <td valign="top">Log errors but don't treat as fatal.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">usetimestamps</td>
    <td valign="top">conditionally download a file based on the timestamp of the local copy.
	HTTP only</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;get src=&quot;http://jakarta.apache.org/&quot; dest=&quot;help/index.html&quot; /&gt;</pre>
<p>Gets the index page of http://jakarta.apache.org/, and stores it in the file <code>help/index.html</code>.</p>

<pre>  &lt;get src=&quot;http://jakarta.apache.org/builds/tomcat/nightly/ant.zip&quot; 
	dest=&quot;optional.jar&quot; 
	verbose=&quot;true&quot;
	usetimestamps=&quot;true&quot;/&gt;</pre>
<p>
Gets the nightly ant build from the tomcat distribution, if the local copy
is missing or out of date. Uses the verbose option 
for progress information.
</p>

<hr>
<h2><a name="gunzip">GUnzip</a></h2>
<h3>Description</h3>
<p>Expands a GZip file.</p>

<p>If <i>dest</i> is a directory the name of the destination file is
the same as <i>src</i> (with the &quot;.gz&quot; extension removed if
present). If <i>dest</i> is omitted, the parent dir of <i>src</i> is
taken. The file is only expanded if the source file is newer than the
destination file, or when the destination file does not exist.</p>

<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">src</td>
    <td valign="top">the file to expand.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">the destination file or directory.</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;gunzip src=&quot;test.tar.gz&quot;/&gt;</code></p>
</blockquote>
<p>expands <i>test.tar.gz</i> to <i>test.tar</i></p>
<blockquote>
  <p><code>&lt;gunzip src=&quot;test.tar.gz&quot; dest=&quot;test2.tar&quot;/&gt;</code></p>
</blockquote>
<p>expands <i>test.tar.gz</i> to <i>test2.tar</i></p>
<blockquote>
  <p><code>&lt;gunzip src=&quot;test.tar.gz&quot; dest=&quot;subdir&quot;/&gt;</code></p>
</blockquote>
<p>expands <i>test.tar.gz</i> to <i>subdir/test.tar</i> (assuming
subdir is a directory).</p>

<hr>
<h2><a name="gzip">GZip</a></h2>
<h3>Description</h3>
<p>GZips a file.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">src</td>
    <td valign="top">the file to gzip.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">zipfile</td>
    <td valign="top">the destination file.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;gzip src=&quot;test.tar&quot; zipfile=&quot;test.tar.gz&quot;
  /&gt;</code></p>
</blockquote>
<hr>
<h2><a name="jar">Jar</a></h2>
<h3>Description</h3>
<p>Jars a set of files.</p>
<p>The <i>basedir</i> attribute is the reference directory from where to jar.</p>
<p>Note that file permissions will not be stored in the resulting jarfile.</p>
<p>It is possible to refine the set of files that are being jarred. This can be
done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and <i>defaultexcludes</i>
attributes. With the <i>includes</i> or <i>includesfile</i> attribute you specify the files you want to
have included by using patterns. The <i>exclude</i> or <i>excludesfile</i> attribute is used to specify
the files you want to have excluded. This is also done with patterns. And
finally with the <i>defaultexcludes</i> attribute, you can specify whether you
want to use default exclusions or not. See the section on <a
href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns.</p>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>basedir</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<p>You can also use nested file sets for more flexibility, and specify
multiple ones to merge together different trees of files into one JAR.
See the <a href="#zip">Zip</a> task for more details and examples.</p>
<p>If the manifest is omitted, a simple one will be supplied by Ant.
You should not include <samp>META-INF/MANIFEST.MF</samp> in your set of files.
<p>The <code>whenempty</code> parameter controls what happens when no files match.
If <code>create</code> (the default), the JAR is created anyway with only a manifest.
If <code>skip</code>, the JAR is not created and a warning is issued.
If <code>fail</code>, the JAR is not created and the build is halted with an error.
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">jarfile</td>
    <td valign="top">the jar-file to create.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">basedir</td>
    <td valign="top">the directory from which to jar the files.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">compress</td>
    <td valign="top">Not only store data but also compress them, defaults to true</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">manifest</td>
    <td valign="top">the manifest file to use.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">whenempty</td>
    <td valign="top">Behavior to use if no files match.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;jar jarfile=&quot;${dist}/lib/app.jar&quot; basedir=&quot;${build}/classes&quot; /&gt;</pre>
<p>jars all files in the <code>${build}/classes</code> directory in a file
called <code>app.jar</code> in the <code>${dist}/lib</code> directory.</p>
<pre>  &lt;jar jarfile=&quot;${dist}/lib/app.jar&quot;
       basedir=&quot;${build}/classes&quot;
       excludes=&quot;**/Test.class&quot;
  /&gt;</pre>
<p>jars all files in the <code>${build}/classes</code> directory in a file
called <code>app.jar</code> in the <code>${dist}/lib</code> directory. Files
with the name <code>Test.class</code> are excluded.</p>
<pre>  &lt;jar jarfile=&quot;${dist}/lib/app.jar&quot;
       basedir=&quot;${build}/classes&quot;
       includes=&quot;mypackage/test/**&quot;
       excludes=&quot;**/Test.class&quot;
  /&gt;</pre>
<p>jars all files in the <code>${build}/classes</code> directory in a file
called <code>app.jar</code> in the <code>${dist}/lib</code> directory. Only
files under the directory <code>mypackage/test</code> are used, and files with
the name <code>Test.class</code> are excluded.</p>
<pre>  &lt;jar jarfile=&quot;${dist}/lib/app.jar&quot;&gt;
    &lt;fileset dir=&quot;${build}/classes&quot;
             excludes=&quot;**/Test.class&quot;
    /&gt;
    &lt;fileset dir=&quot;${src}/resources&quot;/&gt;
  &lt;/jar&gt;</pre>
<p>jars all files in the <code>${build}/classes</code> directory and also
in the <code>${src}/resources</code> directory together in a file
called <code>app.jar</code> in the <code>${dist}/lib</code> directory.
Files with the name <code>Test.class</code> are excluded.
If there are files such as <code>${build}/classes/mypackage/MyClass.class</code>
and <code>${src}/resources/mypackage/image.gif</code>, they will appear
in the same directory in the JAR (and thus be considered in the same package
by Java).</p>

<hr>
<h2><a name="java">Java</a></h2>
<h3>Description</h3>
<p>Executes a Java class within the running (Ant) VM or forks another VM if
specified.</p>
<p>Be careful that the executed class doesn't call System.exit(), because it
will terminate the VM and thus Ant. In case this happens, it's highly suggested
that you set the fork attribute so that System.exit() stops the other VM and not
the one that is currently running Ant.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">classname</td>
    <td valign="top">the Java class to execute.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">args</td>
    <td valign="top">the arguments for the class that is
      executed. <b>deprecated, use nested <code>&lt;arg&gt;</code>
      elements instead.</b></td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">classpath</td>
    <td valign="top">the classpath to use.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">classpathref</td>
    <td valign="top">the classpath to use, given as <a
      href="#references">reference</a> to a PATH defined elsewhere.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">fork</td>
    <td valign="top">if enabled triggers the class execution in another VM
      (disabled by default)</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">jvm</td>
    <td valign="top">the command used to invoke the Java Virtual Machine,
      default is 'java'.  The command is resolved by java.lang.Runtime.exec().
      Ignored if fork is disabled.
    </td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">jvmargs</td>
    <td valign="top">the arguments to pass to the forked VM (ignored
      if fork is disabled). <b>deprecated, use nested
      <code>&lt;jvmarg&gt;</code> elements instead.</b></td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">maxmemory</td>
    <td valign="top">Max amount of memory to allocate to the forked VM
      (ignored if fork is disabled)</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">failonerror</td>
    <td valign="top">Stop the buildprocess if the command exits with a
      returncode other than 0. Only available if fork is true.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">dir</td>
    <td valign="top">The directory to invoke the VM in.  (ignored if
      fork is disabled)</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>arg and jvmarg</h4>
<p>Use nested <code>&lt;arg&gt;</code> and <code>&lt;jvmarg&gt;</code>
elements to specify arguments for the or the forked VM. See <a
href="index.html#arg">Command line arguments</a>.</p>
<h4>sysproperty</h4>
<p>Use nested <code>&lt;sysproperty&gt;</code>
elements to specify system properties required by the class. 
These properties will be made available to the VM during the execution
of the class (either ANT's VM or the forked VM). The attributes
for this element are the same as for <a href="index.html#env">environment
variables</a>.</p>
<h4>classpath</h4>
<p><code>Java</code>'s <em>classpath</em> attribute is a <a
href="#path">PATH like structure</a> and can also be set via a nested
<em>classpath</em> element.</p>
<h5>Example</h5>
<pre>  
       &lt;java classname=&quot;test.Main&quot; &gt;
         &lt;arg value=&quot;-h&quot; /&gt; 
         &lt;classpath&gt;
           &lt;pathelement location=&quot;\test.jar&quot; /&gt;
           &lt;pathelement path=&quot;${java.class.path}&quot; /&gt;
         &lt;/classpath&gt;
       &lt;/java&gt;
</pre>
<h3>Examples</h3>
<pre>  &lt;java classname=&quot;test.Main&quot; /&gt;</pre>
<pre>  &lt;java classname=&quot;test.Main&quot;
        fork=&quot;yes&quot; &gt;
    &lt;sysproperty key=&quot;DEBUG&quot; value=&quot;true&quot; /&gt; 
    &lt;arg value=&quot;-h&quot; /&gt; 
    &lt;jvmarg value=&quot;-Xrunhprof:cpu=samples,file=log.txt,depth=3&quot; /&gt; 
  &lt;/java&gt;
</pre>

<hr>
<h2><a name="javac">Javac</a></h2>
<h3>Description</h3>
<p>Compiles a source tree within the running (Ant) VM.</p>
<p>The source and destination directory will be recursively scanned for Java
source files to compile. Only Java files that have no corresponding class file
or where the class file is older than the java file will be compiled.</p>
<p>The directory structure of the source tree should follow the package
hierarchy.</p>
<p>It is possible to refine the set of files that are being compiled/copied.
This can be done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and <i>defaultexcludes</i>
attributes. With the <i>includes</i> or <i>includesfile</i> attribute you specify the files you want to
have included by using patterns. The <i>exclude</i> or <i>excludesfile</i> attribute is used to specify
the files you want to have excluded. This is also done with patterns. And
finally with the <i>defaultexcludes</i> attribute, you can specify whether you
want to use default exclusions or not. See the section on <a
href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns.</p>
<p>It is possible to use different compilers. This can be selected with the
&quot;build.compiler&quot; property. There are three choices:</p>
<ul>
  <li>classic (the standard compiler of JDK 1.1/1.2)</li>
  <li>modern (the new compiler of JDK 1.3)</li>
  <li>jikes (the <a
    href="http://oss.software.ibm.com/developerworks/opensource/jikes/project">Jikes</a>
    compiler)</li>
  <li>jvc (the Command-Line Compiler from Microsoft's SDK for Java /
    Visual J++)</li>
</ul>
<p>For JDK 1.1/1.2 is classic the default. For JDK 1.3 is modern the default.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">srcdir</td>
    <td valign="top">location of the java files.</td>
    <td align="center" valign="top">Yes, unless nested <code>&lt;src&gt;</code> elements are present.</td>
  </tr>
  <tr>
    <td valign="top">destdir</td>
    <td valign="top">location where to store the class files.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">classpath</td>
    <td valign="top">the classpath to use.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">bootclasspath</td>
    <td valign="top">location of bootstrap class files.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">classpathref</td>
    <td valign="top">the classpath to use, given as <a
      href="#references">reference</a> to a PATH defined elsewhere.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">bootclasspathref</td>
    <td valign="top">location of bootstrap class files, given as by <a
      href="#references">reference</a> to a PATH defined elsewhere.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">extdirs</td>
    <td valign="top">location of installed extensions.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">encoding</td>
    <td valign="top">encoding of source files.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">debug</td>
    <td valign="top">indicates whether there should be compiled with debug
      information (&quot;off&quot;).</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">optimize</td>
    <td valign="top">indicates whether there should be compiled with
      optimization (&quot;off&quot;).</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">deprecation</td>
    <td valign="top">indicates whether there should be compiled with deprecation
      information (&quot;off&quot;).</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">target</td>
    <td valign="top">Generate class files for specific VM version, e.g.
	 &quot;1.1&quot; or &quot;1.2&quot;.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">verbose</td>
    <td valign="top">asks the compiler for verbose output.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">depend</td> <td valign="top">enables dependency
      tracking for compilers that support this (jikes and classic)</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>

<h3>Parameters specified as nested elements</h3>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>srcdir</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<h4>src, classpath, bootclasspath and extdirs</h4>
<p><code>Javac</code>'s <em>srcdir</em>, <em>classpath</em>,
<em>bootclasspath</em> and <em>extdirs</em> attributes are <a
href="#path">PATH like structure</a> and can also be set via nested
<em>src</em>, <em>classpath</em>, <em>bootclasspath</em> and
<em>extdirs</em> elements respectively.</p>

<h3>Examples</h3>
<pre>  &lt;javac srcdir=&quot;${src}&quot;
         destdir=&quot;${build}&quot;
         classpath=&quot;xyz.jar&quot;
         debug=&quot;on&quot;
  /&gt;</pre>
<p>compiles all .java files under the directory <code>${src}</code>, and stores
the .class files in the directory <code>${build}</code>. 
The classpath used contains <code>xyz.jar</code>, and debug information is on.</p>
<pre>  &lt;javac srcdir=&quot;${src}&quot;
         destdir=&quot;${build}&quot;
         includes=&quot;mypackage/p1/**,mypackage/p2/**&quot;
         excludes=&quot;mypackage/p1/testpackage/**&quot;
         classpath=&quot;xyz.jar&quot;
         debug=&quot;on&quot;
  /&gt;</pre>
<p>compiles .java files under the directory <code>${src}</code>, and stores the
.class files in the directory <code>${build}</code>. 
The classpath used contains <code>xyz.jar</code>, and debug information is on.
Only files under <code>mypackage/p1</code> and <code>mypackage/p2</code> are
used. Files in the <code>mypackage/p1/testpackage</code> directory are excluded
form compilation and copy.</p>

<pre>  &lt;javac srcdir=&quot;${src}:${src2}&quot;
         destdir=&quot;${build}&quot;
         includes=&quot;mypackage/p1/**,mypackage/p2/**&quot;
         excludes=&quot;mypackage/p1/testpackage/**&quot;
         classpath=&quot;xyz.jar&quot;
         debug=&quot;on&quot;
  /&gt;</pre>

<p>is the same as the previous example with the addition of a second source path, defined by
the propery <code>src2</code>. This can also be represented using nested elements as follows

<pre>  &lt;javac destdir=&quot;${build}&quot;
         classpath=&quot;xyz.jar&quot;
         debug=&quot;on&quot;&gt;
    &lt;src path=&quot;${src}&quot; /&gt;
    &lt;src path=&quot;${src2}&quot; /&gt;
    &lt;include name=&quot;mypackage/p1/**,mypackage/p2/**&quot; /&gt;
    &lt;exclude name=&quot;mypackage/p1/testpackage/**&quot; /&gt;
  &lt;/javac&gt;</pre>

<p><b>Note:</b> If you are using Ant on Windows and a new DOS-Window pops up
for every use of an external compiler this may be a problem of the JDK you are using.
This problem may occur with all JDK's &lt; 1.2.</p>

<hr>
<h2><a name="javadoc">Javadoc/Javadoc2</a></h2>
<h3>Description</h3>
<p>Generates code documentation using the javadoc tool.</p>
<p>The source directory will be recursively scanned for Java source files to process
but only those matching the inclusion rules will be passed to the javadoc tool. This
allows wildcards to be used to choose between package names, reducing verbosity
and management costs over time. This task, however, has no notion of
&quot;changed&quot; files, unlike the <a href="#javac">javac</a> task. This means
all packages will be processed each time this task is run. In general, however,
this task is used much less frequently.</p>
<p>This task works seamlessly between different javadoc versions (1.1 and 1.2),
with the obvious restriction that the 1.2 attributes will be ignored if run in a
1.1 VM.</p>
<p>NOTE: since javadoc calls System.exit(), javadoc cannot be run inside the
same VM as ant without breaking functionality. For this reason, this task 
always forks the VM. This overhead is not significant since javadoc is normally a heavy
application and will be called infrequently.</p>
<p>NOTE: the packagelist attribute allows you to specify the list of packages to 
document outside of the Ant file. It's a much better practice to include everything 
inside the build.xml file. This option was added in order to make it easier to 
migrate from regular makefiles, where you would use this option of javadoc. 
The packages listed in packagelist are not checked, so the task performs even 
if some packages are missing or broken. Use this option if you wish to convert from 
an existing makefile. Once things are running you should then switch to the regular 
notation. 

<p>DEPRECATION: the javadoc2 task simply points to the javadoc task and it's
there for back compatibility reasons. Since this task will be removed in future
versions, you are strongly encouraged to use <a href="#javadoc">javadoc</a>
instead.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Availability</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">sourcepath</td>
    <td valign="top">Specify where to find source files</td>
    <td align="center" valign="top">all</td>
    <td align="center" rowspan="2">At least one of the two or nested
      <code>&lt;sourcepath&gt;</code></td>
  </tr>
  <tr>
    <td valign="top">sourcepathref</td>
    <td valign="top">Specify where to find source files by <a
      href="#references">reference</a> to a PATH defined elsewhere.</td>
    <td align="center" valign="top">all</td>
  </tr>
  <tr>
    <td valign="top">destdir</td>
    <td valign="top">Destination directory for output files</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">maxmemory</td>
    <td valign="top">Max amount of memory to allocate to the javadoc VM</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">sourcefiles</td>
    <td valign="top">Space separated list of source files</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="middle" rowspan="2">at least one of the two</td>
  </tr>
  <tr>
    <td valign="top">packagenames</td>
    <td valign="top">Comma separated list of package files (with terminating
      wildcard)</td>
    <td align="center" valign="top">all</td>
  </tr>
  <tr>
    <td valign="top">packageList</td>
    <td valign="top">The name of a file containing the packages to process</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">classpath</td>
    <td valign="top">Specify where to find user class files</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Bootclasspath</td>
    <td valign="top">Override location of class files loaded by the bootstrap
      class loader</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">classpathref</td>
    <td valign="top">Specify where to find user class files by <a
      href="#references">reference</a> to a PATH defined elsewhere.</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">bootclasspathref</td>
    <td valign="top">Override location of class files loaded by the
      bootstrap class loader by <a href="#references">reference</a> to a
      PATH defined elsewhere.</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Extdirs</td>
    <td valign="top">Override location of installed extensions</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Overview</td>
    <td valign="top">Read overview documentation from HTML file</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Public</td>
    <td valign="top">Show only public classes and members</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Protected</td>
    <td valign="top">Show protected/public classes and members (default)</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Package</td>
    <td valign="top">Show package/protected/public classes and members</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Private</td>
    <td valign="top">Show all classes and members</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Old</td>
    <td valign="top">Generate output using JDK 1.1 emulating doclet</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Verbose</td>
    <td valign="top">Output messages about what Javadoc is doing</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Locale</td>
    <td valign="top">Locale to be used, e.g. en_US or en_US_WIN</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Encoding</td>
    <td valign="top">Source file encoding name</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Version</td>
    <td valign="top">Include @version paragraphs</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Use</td>
    <td valign="top">Create class and package usage pages</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Author</td>
    <td valign="top">Include @author paragraphs</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Splitindex</td>
    <td valign="top">Split index into one file per letter</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Windowtitle</td>
    <td valign="top">Browser window title for the documentation (text)</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Doctitle</td>
    <td valign="top">Include title for the package index(first) page (html-code)</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Header</td>
    <td valign="top">Include header text for each page (html-code)</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">Footer</td>
    <td valign="top">Include footer text for each page (html-code)</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">bottom</td>
    <td valign="top">Include bottom text for each page (html-code)</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">link</td>
    <td valign="top">Create links to javadoc output at the given URL</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">linkoffline</td>
    <td valign="top">Link to docs at &lt;url&gt; using package list at
      &lt;url2&gt;</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">group</td>
    <td valign="top">Group specified packages together in overview page</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">nodeprecated</td>
    <td valign="top">Do not include @deprecated information</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">nodeprecatedlist</td>
    <td valign="top">Do not generate deprecated list</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">notree</td>
    <td valign="top">Do not generate class hierarchy</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">noindex</td>
    <td valign="top">Do not generate index</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">nohelp</td>
    <td valign="top">Do not generate help link</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">nonavbar</td>
    <td valign="top">Do not generate navigation bar</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">serialwarn</td>
    <td valign="top">FUTURE: Generate warning about @serial tag</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">helpfile</td>
    <td valign="top">FUTURE: Specifies the HTML help file to use</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">stylesheetfile</td>
    <td valign="top">Specifies the CSS stylesheet to use</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">charset</td>
    <td valign="top">FUTURE: Charset for cross-platform viewing of generated
      documentation</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">docencoding</td>
    <td valign="top">Output file encoding name</td>
    <td align="center" valign="top">1.1</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">doclet</td>
    <td valign="top">Specifies the class file that starts the doclet used in generating the documentation.</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">docletpath</td>
    <td valign="top">Specifies the path to the doclet class file that is specified with the -doclet option.</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">docletpathref</td>
    <td valign="top">Specifies the path to the doclet class file that
      is specified with the -doclet option by <a
      href="#references">reference</a> to a PATH defined elsewhere.</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">additionalparam</td>
    <td valign="top">Lets you add additional parameters to the javadoc command line. Useful for doclets</td>
    <td align="center" valign="top">1.2</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">failonerror</td>
    <td valign="top">Stop the buildprocess if the command exits with a
      returncode other than 0.</td>
    <td align="center" valign="top">all</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>

<h3>Parameters specified as nested elements</h3>
<h4>link</h4>
<p>Create link to javadoc output at the given URL. This performs the
same role as the link and linkoffline attributes. You can use either
syntax (or both at once), but with the nested elements you can easily
specify multiple occurrences of the arguments.</p>
<h4>Parameters</h4>

<table width="60%" border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">href</td>
    <td valign="top">The URL for the external documentation you wish to link to</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">offline</td>
    <td valign="top">True if this link is not available online at the time of 
                     generating the documentation</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">packagelistLoc</td>
    <td valign="top">The location to the directory containing the package-list file for
                     the external documentation</td>
    <td align="center" valign="top">Only if the offline attribute is true</td>
  </tr>
</table>
  
<h4>groups</h4> 
<p>Separates packages on the overview page into whatever groups you
specify, one group per table. This performs the same role as the group
attribute. You can use either syntax (or both at once), but with the
nested elements you can easily specify multiple occurrences of the
arguments.</p>

<table width="60%" border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">title</td>
    <td valign="top">Title of the group</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">packages</td>
    <td valign="top">List of packages to include in that group</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>

<h4>doclet</h4>
<p>The doclet nested element is used to specify the doclet that javadoc will 
use to process the input source files. A number of the standard javadoc arguments
are actually arguments of the standard doclet. If these are specified in the javadoc
task's attributes, they will be passed to the doclet specified in the 
<code>&lt;doclet&gt;</code> nested element. Such attributes should only be specified, 
therefore, if they can be interpreted by the doclet in use.

<p>If the doclet requires additional parameters, these can be specified with
<code>&lt;param&gt;</code> elements within the <code>&lt;doclet&gt;</code> 
element. These paramaters are restricted to simple strings. An example usage
of the doclet element is shown below:

<pre>  &lt;javadoc ...&gt;
     &lt;doclet name="theDoclet"
             path="path/to/theDoclet"&gt;
        &lt;param name="-foo" value="foovalue"/&gt;
        &lt;param name="-bar" value="barvalue"/&gt;
     &lt;/doclet&gt;
  &lt;/javadoc&gt;
</pre>

<h4>sourcepath, classpath and bootclasspath</h4>
<p><code>Javadoc</code>'s <em>sourcepath</em>, <em>classpath</em> and
<em>bootclasspath</em> attributes are <a href="#path">PATH like
structure</a> and can also be set via nested <em>sourcepath</em>,
<em>classpath</em> and <em>bootclasspath</em> elements
respectively.</p>

<h3>Example</h3>
<pre>  &lt;javadoc packagenames=&quot;com.dummy.test.*&quot;
           sourcepath=&quot;src&quot;
           destdir=&quot;docs/api&quot;
           author=&quot;true&quot;
           version=&quot;true&quot;
           use=&quot;true&quot;
           windowtitle=&quot;Test API&quot;
           doctitle=&quot;&lt;h1&gt;Test&lt;/h1&gt;&quot;
           bottom=&quot;&lt;i&gt;Copyright &amp;#169; 2000 Dummy Corp. All Rights Reserved.&lt;/i&gt;&quot;&gt;
    &lt;group title=&quot;Group 1 Packages&quot; packages=&quot;com.dummy.test.a*&quot;/&gt;
    &lt;group title=&quot;Group 2 Packages&quot; packages=&quot;com.dummy.test.b*&quot;/&gt;
    &lt;link offline=&quot;true&quot; href=&quot;http://java.sun.com/products/jdk/1.2/docs/api/&quot; packagelistLoc=&quot;C:\tmp&quot;/&gt;
    &lt;link href=&quot;http://developer.java.sun.com/developer/products/xml/docs/api/&quot;/&gt;
  &lt/javadoc&gt;</pre>
  
<hr>
<h2><a name="mail">Mail</a></h2>
<h3>Description</h3>
<p>A task to send SMTP email.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">from</td>
    <td valign="top">Email address of sender.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">tolist</td>
    <td valign="top">Comma-separated list of recipients.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">message</td>
    <td valign="top">Message to send in the body of the email.</td>
    <td align="center" valign="middle" rowspan="2">Yes</td>
  </tr>
  <tr>
    <td valign="top">files</td>
    <td valign="top">Filename(s) of text to send in the body of the email. 
	Multiple files are comma-separated.</td>
  </tr>
  <tr>
    <td valign="top">mailhost</td>
    <td valign="top">Host name of the mail server.</td>
    <td align="center" valign="top">No, default to &quot;localhost&quot;</td>
  </tr>
  <tr>
    <td valign="top">subject</td>
    <td valign="top">Email subject line.</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>
  &lt;mail from=&quot;me&quot; tolist=&quot;you&quot; subject=&quot;Results of nightly build&quot;
        files=&quot;build.log&quot;/&gt;</pre>
<p>Sends an eMail from <i>me</i> to <i>you</i> with a subject of 
<i>Results of nightly build</i> and includes the contents of <i>build.log</i>
in the body of the message.</p>
<hr>

<h2><a name="mkdir">Mkdir</a></h2>
<h3>Description</h3>
<p>Creates a directory. Also non-existent parent directories are created, when
necessary.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">dir</td>
    <td valign="top">the directory to create.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>&lt;mkdir dir=&quot;${dist}&quot; /&gt;</pre>
<p>creates a directory <code>${dist}</code>.</p>
<pre>&lt;mkdir dir=&quot;${dist}/lib&quot; /&gt;</pre>
<p>creates a directory <code>${dist}/lib</code>.</p>
<hr>
<h2><a name="move">Move</a></h2>
<h3>Description</h3>
<p>Moves a file to a new file or directory, or sets of files to
a new directory.  By default, the
destination file is overwritten if it already exists.  When <var>overwrite</var> is
turned off, then files are only moved if the source file is newer than
the destination file, or when the destination file does not exist.</p>
<p><a href="#fileset">FileSet</a>s are used to select sets of files
to move to the <var>todir</var> directory.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">the file to move</td>
    <td valign="top" align="center">One of <var>file</var> or 
     at least one nested fileset element</td>
  </tr>
  <tr>
    <td valign="top">tofile</td>
    <td valign="top">the file to move to</td>
    <td valign="top" align="center" rowspan="2">With the <var>file</var> attribute, 
    either <var>tofile</var> or <var>todir</var> can be used.  With a nested fileset, 
	 only <var>todir</var> is allowed.</td>
  </tr>
  <tr>
    <td valign="top">todir</td>
    <td valign="top">the directory to move to</td>
  </tr>
  <tr>
    <td valign="top">overwrite</td>
    <td valign="top">overwrite existing files even if the destination
      files are newer (default is &quot;true&quot;)</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">filtering</td>
    <td valign="top">indicates whether token filtering should take place during
      the move.  See the <a href="#filter">filter</a> task for a description of
      how filters work.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">flatten</td>
    <td valign="top">ignore directory structure of source directory,
      copy all files into a single directory, specified by the <var>todir</var>
      attribute (default is &quot;false&quot;).</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includeEmptyDirs</td>
	 <td valign="top">Copy empty directories included with the nested FileSet(s).
	   Defaults to &quot;yes&quot;.</td>
	 <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<p><b>Move a single file (rename a file)</b></p>
<pre>
  &lt;move file=&quot;file.orig&quot; tofile=&quot;file.moved&quot; /&gt;
</pre>
<p><b>Move a single file to a directory</b></p>
<pre>
  &lt;move file=&quot;file.orig&quot; todir=&quot;dir/to/move/to&quot; /&gt;
</pre>
<p><b>Move a directory to a new directory</b></p>
<pre>
  &lt;move todir=&quot;new/dir/to/move/to&quot;&gt;
    &lt;fileset dir=&quot;src/dir&quot;/&gt;
  &lt;/move&gt;
</pre>
<p><b>Move a set of files to a new directory</b></p>
<pre>
  &lt;move todir=&quot;some/new/dir&quot; &gt;
    &lt;fileset dir=&quot;my/src/dir&quot; &gt;
      &lt;include name=&quot;**/*.jar&quot; /&gt;
      &lt;exclude name=&quot;**/ant.jar&quot; /&gt;
    &lt;/fileset&gt;
  &lt;/move&gt;
</pre>
<hr>
<h2><a name="patch">Patch</a></h2>
<h3>Description</h3>
<p>Applies a diff file to originals.
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">patchfile</td> 
    <td valign="top">the file that includes the diff output</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">originalfile</td> 
    <td valign="top">the file to patch</td>
    <td align="center" valign="top">No, tries to guess it from the diff 
      file</td>
  </tr>
  <tr>
    <td valign="top">backups</td> 
    <td valign="top">Keep backups of the unpatched files</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">quiet</td> 
    <td valign="top">Work silently unless an error occurs</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">reverse</td> 
    <td valign="top">Assume patch was created with old and new files 
      swapped.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">ignorewhitespace</td> 
    <td valign="top">Ignore whitespace differences.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">strip</td> 
    <td valign="top">Strip the smallest prefix containing <i>num</i> leading 
      slashes from filenames.</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;patch patchfile=&quot;module.1.0-1.1.patch&quot; /&gt;</pre>
<p>applies the diff included in <i>module.1.0-1.1.patch</i> to the
files in base directory guessing the filename(s) from the diff output.
<pre>  &lt;patch patchfile=&quot;module.1.0-1.1.patch&quot; strip=&quot;1&quot; /&gt;</pre>
<p>like above but one leading directory part will be removed. i.e. if
the diff output looked like
<pre>
--- a/mod1.0/A	Mon Jun  5 17:28:41 2000
+++ a/mod1.1/A	Mon Jun  5 17:28:49 2000
</pre> 
the leading <i>a/</i> will be stripped.
<hr>
<h2><a name="property">Property</a></h2>
<h3>Description</h3>
<p>Sets a property (by name and value), or set of properties (from file or
resource) in the project.</p>
<p>When a property was set by the user, or was a property in a parent project
(that started this project with the <a href="#ant">ant task</a>), then this
property cannot be set, and will be ignored. This means that properties set
outside the current project always override the properties of the current
project.</p>
<p>There are four ways to set properties:</p>
<ul>
  <li>By supplying both the <i>name</i> and <i>value</i> attribute.</li>
  <li>By supplying both the <i>name</i> and <i>refid</i> attribute.</li>
  <li>By setting the <i>file</i> attribute with the filename of the property
    file to load. This property file has the format as defined by the file used
    in the class java.util.Properties.</li>
  <li>By setting the <i>resource</i> attribute with the resource name of the
    property file to load. This property file has the format as defined by the
    file used in the class java.util.Properties.</li>
</ul>
<p>Although combinations of the three ways are possible, only one should be used
at a time. Problems might occur with the order in which properties are set, for
instance.</p>
<p>The value part of the properties being set, might contain references to other
properties. These references are resolved at the time these properties are set.
This also holds for properties loaded from a property file.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">name</td>
    <td valign="top">the name of the property to set.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">value</td>
    <td valign="top">the value of the property.</td>
    <td valign="middle" align="center" rowspan="5">Yes</td>
  </tr>
  <tr>
    <td valign="top">refid</td>
    <td valign="top"><a href="#references">Reference</a> to an object
      defined elsewhere. Only yields reasonable results for references
      to <a href="#path">PATH like structures</a> or properties.</td>
  </tr>
  <tr>
    <td valign="top">resource</td>
    <td valign="top">the resource name of the property file.</td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">the filename of the property file .</td>
  </tr>
  <tr>
    <td valign="top">location</td>
    <td valign="top">Sets the property to the absolute filename of the
      given file. If the value of this attribute is an absolute path, it
      is left unchanged (with / and \ characters converted to the
      current platforms conventions). Otherwise it is taken as a path
      relative to the project's basedir and expanded.</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;property name=&quot;foo.dist&quot; value=&quot;dist&quot; /&gt;</pre>
<p>sets the property <code>foo.dist</code> to the value &quot;dist&quot;.</p>
<pre>  &lt;property file=&quot;foo.properties&quot; /&gt;</pre>
<p>reads a set of properties from a file called &quot;foo.properties&quot;.</p>
<pre>  &lt;property resource=&quot;foo.properties&quot; /&gt;</pre>
<p>reads a set of properties from a resource called &quot;foo.properties&quot;.</p>
<p>Note that you can reference a global properties file for all of your Ant
builds using the following:
<pre>  &lt;property file=&quot;${user.home}/.ant-global.properties&quot; /&gt;</pre>
<p>since the &quot;user.home&quot; property is defined by the Java virtual machine
to be your home directory.  This technique is more appropriate for Unix than 
Windows since the notion of a home directory doesn't exist on Windows.  On the
JVM that I tested, the home directory on Windows is &quot;C:\&quot;.  Different JVM
implementations may use other values for the home directory on Windows.
<hr>
<h2><a name="rename">Rename</a></h2>
<h3><i>Deprecated</i></h3>
<p><i>This task has been deprecated.  Use the Move task instead.</i></p>
<h3>Description</h3>
<p>Renames a given file.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">src</td>
    <td valign="top">file to rename.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">new name of the file.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">replace</td>
    <td valign="top">Enable replacing of existing file (default: on).</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;rename src=&quot;foo.jar&quot; dest=&quot;${name}-${version}.jar&quot; /&gt;</pre> 
<p>Renames the file <code>foo.jar</code> to <code>${name}-${version}.jar</code> (assuming <code>name</code>
 and <code>version</code> being predefined properties). If a file named <code>${name}-${version}.jar</code>
 already exists, it will be removed prior to renaming <code>foo.jar</code>.</p>
<hr>
<h2><a name="replace">Replace</a></h2>
<h3>Description</h3>
<p>Replace is a directory based task for replacing the occurrence of a given string with another string 
in selected file.</p>
<p>If you want to replace a text that crosses line boundaries, you
must use a nested <code>&lt;replacetoken&gt;</code> element.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">file for which the token should be replaced.</td>
    <td align="center" rowspan="2">Exactly one of the two.</td>
  </tr>
  <tr>
    <td valign="top">dir</td>
    <td valign="top">The base directory to use when replacing a token in 
      multiple files.</td>
  </tr>
  <tr>
    <td valign="top">token</td>
    <td valign="top">the token which must be replaced.</td>
    <td valign="top" align="center">Yes, unless a nested <code>replacetoken</code>
      element is used.</td>
  </tr>
  <tr>
    <td valign="top">value</td>
    <td valign="top">the new value for the token. When omitted, an empty string
      (&quot;&quot;) is used.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;replace file=&quot;${src}/index.html&quot; token=&quot;@@@&quot; value=&quot;wombat&quot; /&gt;</pre>
<p>replaces occurrences of the string &quot;@@@&quot; with the string
&quot;wombat&quot;, in the file <code>${src}/index.html</code>.</p>
<h3>Parameters specified as nested elements</h3>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code> as well as the
nested <code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<p>If either the text you want to replace or the replacement text
cross line boundaries, you can use nested elements to specify
them.</p>
<h3>Examples</h3>
<blockquote><pre>  
&lt;replace dir=&quot;${src}&quot; value=&quot;wombat&quot;&gt;
  &lt;include name=&quot;**/*.html&quot; /&gt;
  &lt;replacetoken&gt;&lt;[CDATA[multi line
token]]>&lt;/replacetoken&gt;
&lt;/replace&gt;
</pre></blockquote>
<p>replaces occurrences of the string &quot;multi
line<em>\n</em>token&quot; with the string &quot;wombat&quot;, in all
HTML files in the directory <code>${src}</code>.Where <em>\n</em> is
the platform specific line separator.</p>
<blockquote><pre>  
&lt;replace file=&quot;${src}/index.html&quot;&gt;
  &lt;replacetoken&gt;&lt;[CDATA[two line
token]]>&lt;/replacetoken&gt;
  &lt;replacevalue&gt;&lt;[CDATA[two line
token]]>&lt;/replacevalue&gt;
&lt;/replace&gt;
</pre></blockquote>
<hr>
<h2><a name="rmic">Rmic</a></h2>
<h3>Description</h3>
<p>Runs the rmic compiler for a certain class.</p>
<p>Rmic can be run on a single class (as specified with the classname
attribute) or a number of classes at once (all classes below base that
are neither _Stub nor _Skel classes).</p>
<p>It is possible to refine the set of files that are being rmiced. This can be
done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and <i>defaultexcludes</i>
attributes. With the <i>includes</i> or <i>includesfile</i> attribute you specify the files you want to
have included by using patterns. The <i>exclude</i> or <i>excludesfile</i> attribute is used to specify
the files you want to have excluded. This is also done with patterns. And
finally with the <i>defaultexcludes</i> attribute, you can specify whether you
want to use default exclusions or not. See the section on <a
href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns.</p>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>base</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">base</td>
    <td valign="top">the location to store the compiled files.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">classname</td>
    <td valign="top">the class for which to run <code>rmic</code>.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">filtering</td>
    <td valign="top">indicates whether token filtering should take place</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">sourcebase</td>
    <td valign="top">Pass the &quot;-keepgenerated&quot; flag to rmic and
 move the generated source file to the base directory.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">stubversion</td>
    <td valign="top">Specify the JDK version for the generated stub code.
 Specify &quot;1.1&quot; to pass the &quot;-v1.1&quot; option to rmic.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">classpath</td>
    <td valign="top">The classpath to use during compilation</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">classpathref</td>
    <td valign="top">The classpath to use during compilation, given as <a
      href="#references">reference</a> to a PATH defined elsewhere</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">verify</td>
    <td valign="top">check that classes implement Remote before handing them 
        to rmic (default is false)</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>classpath</h4>
<p><code>Rmic</code>'s <em>classpath</em> attribute is a <a
href="#path">PATH like structure</a> and can also be set via a nested
<em>classpath</em> elements.</p>
<h3>Examples</h3>
<pre>  &lt;rmic classname=&quot;com.xyz.FooBar&quot; base=&quot;${build}/classes&quot; /&gt;</pre>
<p>runs the rmic compiler for the class <code>com.xyz.FooBar</code>. The
compiled files will be stored in the directory <code>${build}/classes</code>.</p>
<pre>  &lt;rmic base=&quot;${build}/classes&quot; includes=&quot;**/Remote*.class&quot; /&gt;</pre>
<p>runs the rmic compiler for all classes with <code>.class</code>
files below <code>${build}/classes</code> whose classname starts with
<i>Remote</i>. The compiled files will be stored in the directory
<code>${build}/classes</code>.</p>

<hr>
<h2><a name="signjar">SignJar</a></h2>
<h3>Description</h3>
<p>Signs a jar or zip file with the javasign command line tool.</p>

<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">jar</td>
    <td valign="top">the jar file to sign</td>
    <td valign="top" align="center">Yes.</td>
  </tr>
  <tr>
    <td valign="top">alias</td>
    <td valign="top">the alias to sign under</td>
    <td valign="top" align="center">Yes.</td>
  </tr>
  <tr>
    <td valign="top">storepass</td>
    <td valign="top">password for keystore integrity.</td>
    <td valign="top" align="center">Yes.</td>
  </tr>
  <tr>
    <td valign="top">keystore</td>
    <td valign="top">keystore location</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">storetype</td>
    <td valign="top">keystore type</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">keypass</td>
    <td valign="top">password for private key (if different)</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">sigfile</td>
    <td valign="top">name of .SF/.DSA file</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">signedjar</td>
    <td valign="top">name of signed JAR file</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">verbose</td>
    <td valign="top">(true | false) verbose output when signing</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">internalsf</td>
    <td valign="top">(true | false) include the .SF file inside the signature
block</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">sectionsonly</td>
    <td valign="top">(true | false) don't compute hash of entire manifest</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;signjar jar=&quot;${dist}/lib/ant.jar&quot;
alias=&quot;apache-group&quot; storepass=&quot;secret&quot; /&gt;</code></p>
</blockquote>
<p>signs the ant.jar with alias &quot;apache-group&quot; accessing the
keystore and private key via &quot;secret&quot; password.</p>
<hr>
<h2><a name="style">Style</a></h2>
<h3>Description</h3>
<p>Process a set of documents via XSLT.</p>
<p>This is useful for building views of XML based documentation,
or in generating code.</p>
<p>It is possible to refine the set of files that are being copied. This can be
done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and <i>defaultexcludes</i>
attributes. With the <i>includes</i> or <i>includesfile</i> attribute you specify the files you want to
have included by using patterns. The <i>exclude</i> or <i>excludesfile</i> attribute is used to specify
the files you want to have excluded. This is also done with patterns. And
finally with the <i>defaultexcludes</i> attribute, you can specify whether you
want to use default exclusions or not. See the section on <a
href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns.</p>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>basedir</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">basedir</td>
    <td valign="top">where to find the source xml file.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">destdir</td>
    <td valign="top">directory where to store the results.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">extension</td>
    <td valign="top">desired file extension to be used for the targets.
        If not specified, the default is &quot;html&quot;.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">style</td>
    <td valign="top">name of the stylesheet to use.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">processor</td>
    <td valign="top">name of the XSLT processor to use.  Permissible
values are &quot;xslp&quot; for the XSL:P processor, &quot;xalan&quot; 
for the Apache XML Xalan processor, or the name of an arbitrary XSLTLiaison class.
Defaults to xslp or xalan (in that order), if one is found in your
class path</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><pre>
&lt;style basedir=&quot;doc&quot; destdir=&quot;build/doc&quot;
       extension=&quot;html&quot; style=&quot;style/apache.xml&quot;/&gt;
</pre></p>
</blockquote>
<hr>
<h2><a name="tar">Tar</a></h2>
<h3>Description</h3>
<p>Creates a tar archive.</p>
<p>The <i>basedir</i> attribute is the reference directory from where to tar.</p>
<p>It is possible to refine the set of files that are being tarred. This can be
done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and <i>defaultexcludes</i>
attributes. With the <i>includes</i> or <i>includesfile</i> attribute you specify the files you want to
have included by using patterns. The <i>exclude</i> or <i>excludesfile</i> attribute is used to specify
the files you want to have excluded. This is also done with patterns. And
finally with the <i>defaultexcludes</i> attribute, you can specify whether you
want to use default exclusions or not. See the section on <a
href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns.</p>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>basedir</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<p>Note that this task does not perform compression. You might want to use the <a href="#gzip">GZip</a>
task to come up with a .tar.gz package.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td valign="top" align="center"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">tarfile</td>
    <td valign="top">the tar-file to create.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">basedir</td>
    <td valign="top">the directory from which to zip the files.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;tar tarfile=&quot;${dist}/manual.tar&quot; basedir=&quot;htdocs/manual&quot; /&gt;
  &lt;gzip zipfile=&quot;${dist}/manual.tar.gz&quot; src=&quot;${dist}/manual.tar&quot; /&gt;</pre>
<p>tars all files in the <code>htdocs/manual</code> directory in a file called <code>manual.tar</code>
in the <code>${dist}</code>  directory, then applies the gzip task to compress
it.</p>
<pre>  &lt;tar tarfile=&quot;${dist}/manual.tar&quot;
       basedir=&quot;htdocs/manual&quot;
       excludes=&quot;mydocs/**, **/todo.html&quot;
  /&gt;</pre>
<p>tars all files in the <code>htdocs/manual</code> directory in a file called <code>manual.tar</code>
in the <code>${dist}</code> directory. Files in the directory <code>mydocs</code>,
or files with the name <code>todo.html</code> are excluded.</p>
<hr>
<h2><a name="taskdef">Taskdef</a></h2>
<h3>Description</h3>
<p>Adds a task definition to the current project, such that this new task can be
used in the current project. Two attributes are needed, the name that identifies
this task uniquely, and the full name of the class (including the packages) that
implements this task.</p>
<p>Taskdef should be used to add your own tasks to the system. See also &quot;<a
href="#writingowntask">Writing your own task</a>&quot;.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">name</td>
    <td valign="top">the name of the task</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">classname</td>
    <td valign="top">the full class name implementing the task</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">classpath</td> <td valign="top">the classpath to
      use when looking up <code>classname</code>.</td> <td
    align="center" valign="top">No</td>
  </tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>classpath</h4>
<p><code>Taskdef</code>'s <em>classpath</em> attribute is a <a
href="#path">PATH like structure</a> and can also be set via a nested
<em>classpath</em> element.</p>
<h3>Examples</h3>
<pre>  &lt;taskdef name=&quot;myjavadoc&quot; classname=&quot;com.mydomain.JavadocTask&quot; /&gt;</pre>
<p>makes a task called <code>myjavadoc</code> available to Ant. The class <code>com.mydomain.JavadocTask</code>
implements the task.</p>
<hr>
<h2><a name="touch">Touch</a></h2>
<h3>Description</h3>
<p>Changes the modification time of a file and possibly creates it at
the same time.</p>
<p>For JDK 1.1 only the creation of new files with a modification time
of now works, all other cases will emit a warning.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">the name of the file</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">millis</td>
    <td valign="top">specifies the new modification time of the file
       in milliseconds since midnight Jan 1 1970</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">datetime</td>
    <td valign="top">specifies the new modification time of the file
       in the format MM/DD/YYYY HH:MM AM_or_PM.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<p>If both <code>millis</code> and <code>datetime</code> are omitted
the current time is assumed.</p>
<h3>Examples</h3>
<pre>  &lt;touch file=&quot;myfile&quot; /&gt;</pre>
<p>creates <code>myfile</code> if it doesn't exist and changes the
modification time to the current time.</p>
<pre>  &lt;touch file=&quot;myfile&quot; datetime=&quot;06/28/2000 2:02 pm&quot; /&gt;</pre>
<p>creates <code>myfile</code> if it doesn't exist and changes the
modification time to Jun, 28 2000 2:02 pm (14:02 for those used to 24
hour times).</p>
<hr>
<h2><a name="tstamp">Tstamp</a></h2>
<h3>Description</h3>
<p>Sets the DSTAMP, TSTAMP and TODAY properties in the current project. The
DSTAMP is in the &quot;yyyymmdd&quot; format, the TSTAMP is in the &quot;hhmm&quot;
format and TODAY is &quot;month day year&quot;.</p>
<p>These properties can be used in the buildfile, for instance, to create
timestamped filenames or used to replace placeholder tags inside documents to
indicate, for example, the release date. The best place for this task is in your
initialization target.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;tstamp/&gt;</pre>
<hr>
<h2><a name="uptodate">Uptodate</a></h2>
<h3>Description</h3>
<p>Sets a property if a Target file is more up to date than a set of
Source files. Source files are specified by nested &lt;srcfiles&gt;
elements, these are <a href="#fileset">FileSet</a>s.</p>
<p>The value part of the property being set is <i>true</i> if the timestamp of the 
Target file is more recent than the timestamp of every Source file.</p>
<p>Normally, this task is used to set properties that are useful to avoid target
execution depending on the relative age of the specified files.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">property</td>
    <td valign="top">the name of the property to set.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">targetfile</td>
    <td valign="top">the file for which we want to determine the status.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;uptodate property=&quot;xmlBuild.notRequired&quot; targetfile=&quot;${deploy}\xmlClasses.jar&quot; &gt;
    &lt;srcfiles dir= &quot;${src}/xml&quot; includes=&quot;**/*.dtd&quot; /&gt;
  &lt;/uptodate&gt;</pre>
<p>sets the property <code><i>xmlBuild.notRequired</i></code> to the value &quot;true&quot;
if the <i>${deploy}/xmlClasses.jar</i> is more up to date than any of the DTD files in the <i>${src}/xml</i> directory.</p>
<hr>
<h2><a name="unzip">Unjar/Unwar/Unzip</a></h2>
<h3>Description</h3>
<p>Unzips a zip-, war- or jarfile.</p>
<p>For JDK 1.1 &quot;last modified time&quot; field is set to current time instead of being 
carried from zipfile.</p>
<p>File permissions will not be restored on extracted files.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">src</td>
    <td valign="top">zipfile to expand.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">directory where to store the expanded files.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;unzip src=&quot;${tomcat_src}/tools-src.zip&quot; dest=&quot;${tools.home}&quot;
  /&gt;</code></p>
</blockquote>
<hr>
<h2><a name="untar">Untar</a></h2>
<h3>Description</h3>
<p>Untars a tarfile.</p>
<p>File permissions will not be restored on extracted files.</p>
<p>For JDK 1.1 &quot;last modified time&quot; field is set to current time instead of being 
carried from tarfile.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">src</td>
    <td valign="top">tarfile to expand.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">directory where to store the expanded files.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>
&lt;gunzip src=&quot;tools.tar.gz&quot;/&gt;<br>
&lt;untar src=&quot;tools.tar&quot; dest=&quot;${tools.home}&quot;/&gt;
</code></p>
</blockquote>
<hr>
<h2><a name="war">War</a></h2>
<h3>Description</h3>
<p>An extension of the <a href="#jar">Jar</a> task with special
treatment for files that should end up in the <code>WEB-INF/lib</code>,
<code>WEB-INF/classes</code> or <code>WEB-INF</code> directories of the Web
Application Archive.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">warfile</td>
    <td valign="top">the war-file to create.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">webxml</td>
    <td valign="top">The deployment descriptor to use (WEB-INF/web.xml).</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">basedir</td>
    <td valign="top">the directory from which to jar the files.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">compress</td>
    <td valign="top">Not only store data but also compress them, defaults to true</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">manifest</td>
    <td valign="top">the manifest file to use.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">whenempty</td>
    <td valign="top">Behavior to use if no files match.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Nested elements</h3>
<h4>lib</h4>
<p>The nested <code>lib</code> element specifies a <a
href="#fileset">FileSet</a>. All files included in this fileset will
end up in the <code>WEB-INF/lib</code> directory of the war file.</p>
<h4>classes</h4>
<p>The nested <code>classes</code> element specifies a <a
href="#fileset">FileSet</a>. All files included in this fileset will
end up in the <code>WEB-INF/classes</code> directory of the war file.</p>
<h4>webinf</h4>
<p>The nested <code>webinf</code> element specifies a <a
href="#fileset">FileSet</a>. All files included in this fileset will
end up in the <code>WEB-INF</code> directory of the war file. If this
fileset includes a file named <code>web.xml</code>, the file is
ignored and you will get a warning.</p>
<h3>Examples</h3>
<p>Assume the following structure in the project's base directory:
<pre>
thirdparty/libs/jdbc1.jar
thirdparty/libs/jdbc2.jar
build/main/com/myco/myapp/Servlet.class
src/metadata/myapp.xml
src/html/myapp/index.html
src/jsp/myapp/front.jsp
</pre>
then the war file <code>myapp.war</code> created with
<pre>
&lt;war warfile=&quot;myapp.war&quot; webxml=&quot;src/metadata/myapp.xml&quot;&gt;
  &lt;fileset dir=&quot;src/html/myapp&quot; /&gt;
  &lt;fileset dir=&quot;src/jsp/myapp&quot; /&gt;
  &lt;lib dir=&quot;thirdparty/libs&quot;&gt;
    &lt;exclude name=&quot;jdbc1.jar&quot; /&gt;
  &lt;/lib&gt;
  &lt;classes dir=&quot;build/main&quot; /&gt;
&lt;/war&gt;
</pre>
will consist of
<pre>
WEB-INF/web.xml
WEB-INF/lib/jdbc2.jar
WEB-INF/classes/com/myco/myapp/Servlet.class
META-INF/MANIFEST.MF
index.html
front.jsp
</pre>
using Ant's default manifest file. The content of
<code>WEB-INF/web.xml</code> is identical to
<code>src/metadata/myapp.xml</code>.</p>
<hr>
<h2><a name="zip">Zip</a></h2>
<h3>Description</h3>
<p>Creates a zipfile.</p>
<p>The <i>basedir</i> attribute is the reference directory from where to zip.</p>
<p>Note that file permissions will not be stored in the resulting zipfile.</p>
<p>It is possible to refine the set of files that are being zipped. This can be
done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and <i>defaultexcludes</i>
attributes. With the <i>includes</i> or <i>includesfile</i> attribute you specify the files you want to
have included by using patterns. The <i>exclude</i> or <i>excludesfile</i> attribute is used to specify
the files you want to have excluded. This is also done with patterns. And
finally with the <i>defaultexcludes</i> attribute, you can specify whether you
want to use default exclusions or not. See the section on <a
href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns. 
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>basedir</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<p>Or, you may place within it nested file sets, or references to file sets.
In this case <code>basedir</code> is optional; the implicit file set is <em>only used</em>
if <code>basedir</code> is set. You may use any mixture of the implicit file set
(with <code>basedir</code> set, and optional attributes like <code>includes</code>
and optional subelements like <code>&lt;include&gt;</code>); explicit nested
<code>&lt;fileset&gt;</code> elements so long as at least one fileset total is specified. The ZIP file will
only reflect the relative paths of files <em>within</em> each fileset.</p>
<p>The <code>whenempty</code> parameter controls what happens when no files match.
If <code>skip</code> (the default), the ZIP is not created and a warning is issued.
If <code>fail</code>, the ZIP is not created and the build is halted with an error.
If <code>create</code>, an empty ZIP file (explicitly zero entries) is created,
which should be recognized as such by compliant ZIP manipulation tools.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td valign="top" align="center"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">zipfile</td>
    <td valign="top">the zip-file to create.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">basedir</td>
    <td valign="top">the directory from which to zip the files.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">compress</td>
    <td valign="top">Not only store data but also compress them, defaults to true</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">whenempty</td>
    <td valign="top">Behavior when no files match.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<pre>  &lt;zip zipfile=&quot;${dist}/manual.zip&quot;
       basedir=&quot;htdocs/manual&quot;
  /&gt;</pre>
<p>zips all files in the <code>htdocs/manual</code> directory in a file called <code>manual.zip</code>
in the <code>${dist}</code> directory.</p>
<pre>  &lt;zip zipfile=&quot;${dist}/manual.zip&quot;
       basedir=&quot;htdocs/manual&quot;
       excludes=&quot;mydocs/**, **/todo.html&quot;
  /&gt;</pre>
<p>zips all files in the <code>htdocs/manual</code> directory in a file called <code>manual.zip</code>
in the <code>${dist}</code> directory. Files in the directory <code>mydocs</code>,
or files with the name <code>todo.html</code> are excluded.</p>
<pre>  &lt;zip zipfile=&quot;${dist}/manual.zip&quot;
       basedir=&quot;htdocs/manual&quot;
       includes=&quot;api/**/*.html&quot;
       excludes=&quot;**/todo.html&quot;
  /&gt;</pre>
<p>zips all files in the <code>htdocs/manual</code> directory in a file called <code>manual.zip</code>
in the <code>${dist}</code> directory. Only html files under the directory <code>api</code>
are zipped, and files with the name <code>todo.html</code> are excluded.</p>
<pre>  &lt;zip zipfile=&quot;${dist}/manual.zip&quot;&gt;
    &lt;fileset dir=&quot;htdocs/manual&quot;/&gt;
    &lt;fileset dir=&quot;.&quot; includes=&quot;ChangeLog.txt&quot;/&gt;
  &lt;/zip&gt;</pre>
<p>zips all files in the <code>htdocs/manual</code> directory in a file called <code>manual.zip</code>
in the <code>${dist}</code> directory, and also adds the file <code>ChangeLog.txt</code> in the
current directory. <code>ChangeLog.txt</code> will be added to the top of the ZIP file, just as if
it had been located at <code>htdocs/manual/ChangeLog.txt</code>.</p>

<hr>
<h2><a name="optionaltasks">Optional tasks</a></h2>
<ul>
  <li><a href="#cab">Cab</a></li>
  <li><a href="#ftp">FTP</a></li>
  <li><a href="javacc.html">JavaCC</a></li>
  <li><a href="jlink.html">Jlink</a></li>
  <li><a href="junit.html">JUnit</a></li>
  <li><a href="native2ascii.html">Native2Ascii</a></li>
  <li><a href="#netrexxc">NetRexxC</a></li>
  <li><a href="P4desc.html">Perforce</a></li>
  <li><a href="#renameexts">RenameExtensions</a></li>
  <li><a href="#script">Script</a></li>
  <li><a href="#vssget">VssGet</a></li>
  <li><a href="ejb.html">EJB Tasks</a></li>
</ul>
<hr>
<h2><a name="cab">Cab</a></h2>
<h3>Description</h3>
<p>The cab task creates Microsoft cab archive files.  It is invoked
similar to the <a href="#jar">jar</a> or <a href="#zip">zip</a> tasks.
This task will only work on Windows, and will be silently ignored on
other platforms.  You must have the Microsoft cabarc tool available in
your executable path.</p>
<p>See the section on <a href="#directorybasedtasks">directory based
tasks</a>, on how the inclusion/exclusion of files works, and how to
write patterns.</p>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>basedir</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">cabfile</td>
    <td valign="top">the name of the cab file to create.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">basedir</td>
    <td valign="top">the directory to start archiving files from.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">verbose</td>
    <td valign="top">set to &quot;yes&quot; if you want to see the output from
      the cabarc tool.  defaults to &quot;no&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">compress</td>
    <td valign="top">set to &quot;no&quot; to store files without compressing.
      defaults to &quot;yes&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">options</td>
    <td valign="top">use to set additional command-line options for
      the cabarc tool.  should not normally be necessary.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that
      must be included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that
      must be excluded. No files (except default excludes) are excluded
      when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used
      or not (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote><pre>
&lt;cab cabfile=&quot;${dist}/manual.cab&quot;
     basedir=&quot;htdocs/manual&quot; 
  /&gt;
</pre></blockquote>
<p>cabs all files in the htdocs/manual directory in a file called
manual.cab in the ${dist} directory.</p>
<blockquote><pre>
&lt;cab cabfile=&quot;${dist}/manual.cab&quot;
     basedir=&quot;htdocs/manual&quot;
     excludes=&quot;mydocs/**, **/todo.html&quot;
  /&gt;
</pre></blockquote>
<p>cabs all files in the htdocs/manual directory in a file called
manual.cab in the ${dist} directory. Files in the directory mydocs,
or files with the name todo.html are excluded.</p>
<blockquote><pre>
&lt;cab cabfile=&quot;${dist}/manual.cab&quot;
     basedir=&quot;htdocs/manual&quot;
     includes=&quot;api/**/*.html&quot;
     excludes=&quot;**/todo.html&quot;
     verbose=&quot;yes&quot;
  /&gt;
</pre></blockquote>
<p>cab all files in the htdocs/manual directory in a file called
manual.cab in the ${dist} directory. Only html files under the
directory api are archived, and files with the name todo.html are
excluded. Output from the cabarc tool is displayed in the build
output.</p>
<hr>
<h2><a name="ftp">FTP</a></h2>
<h3>Description</h3>
<p>The ftp task implements a basic FTP client that can send, receive,
list, and delete files.  See below for descriptions and examples of how
to perform each task.</p>
<p>The ftp task makes no attempt to determine what file system syntax is
required by the remote server, and defaults to Unix standards.
<i>remotedir</i> must be specified in the exact syntax required by the ftp
server. If the usual Unix conventions are not supported by the server,
<i>separator</i> can be used to set the file separator that should be used
instead.</p>
<p>See the section on <a href="#directorybasedtasks">directory based
tasks</a>, on how the inclusion/exclusion of files works, and how to
write patterns.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">server</td>
    <td valign="top">the address of the remote ftp server.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">port</td>
    <td valign="top">the port number of the remote ftp server.
                     Defaults to port 21.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">userid</td>
    <td valign="top">the login id to use on the ftp server.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">password</td>
    <td valign="top">the login password to use on the ftp server.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">remotedir</td>
    <td valign="top">the directory to which to upload files on the 
                     ftp server.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">action</td>
    <td valign="top">the ftp action to perform, defaulting to &quot;send&quot;.  
                     Currently supports&quot;put&quot;, &quot;get&quot;,
                     &quot;del&quot;, and &quot;list&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">binary</td>
    <td valign="top">selects binary-mode (&quot;yes&quot;) or text-mode 
                     (&quot;no&quot;) transfers.  
                     Defaults to &quot;yes&quot;</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">verbose</td>
    <td valign="top">displays information on each file transferred if set 
                     to &quot;yes&quot;. Defaults to &quot;no&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">depends</td>
    <td valign="top">transfers only new or changed files if set to 
                     &quot;yes&quot;. Defaults to &quot;no&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">newer</td>
    <td valign="top">a synonym for <i>depends</i>.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">separator</td>
    <td valign="top">sets the file separator used on the ftp server.
                     Defaults to &quot;/&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">listing</td>
    <td valign="top">the file to write results of the &quot;list&quot; action.
                     Required for the &quot;list&quot; action, ignored otherwise.</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Sending Files</h3>
<p>The easiest way to describe how to send files is with a couple of examples:</p>
<pre>
  &lt;ftp server=&quot;ftp.apache.org&quot;
       userid=&quot;anonymous&quot;
       password=&quot;me@myorg.com&quot;&gt;
    &lt;fileset dir=&quot;htdocs/manual&quot; /&gt;
  &lt;/ftp&gt;
</pre>
<p>Logs in to <code>ftp.apache.org</code> as <code>anonymous</code> and 
uploads all files in the <code>htdocs/manual</code> directory 
to the default directory for that user.</p>
<pre>  &lt;ftp server=&quot;ftp.apache.org&quot;
       remotedir=&quot;incoming&quot;
       userid=&quot;anonymous&quot;
       password=&quot;me@myorg.com&quot;
       depends=&quot;yes&quot;
  &gt;
    &lt;fileset dir=&quot;htdocs/manual&quot; /&gt;
  &lt;/ftp&gt;</pre>
<p>Logs in to <code>ftp.apache.org</code> as <code>anonymous</code> and 
uploads all new or changed files in the <code>htdocs/manual</code> directory 
to the <code>incoming</code> directory relative to the default directory
for <code>anonymous</code>.</p>
<pre>  &lt;ftp server=&quot;ftp.apache.org&quot;
       port=&quot;2121&quot;
       remotedir=&quot;/pub/incoming&quot;
       userid=&quot;coder&quot;
       password=&quot;java1&quot;
       depends=&quot;yes&quot;
       binary=&quot;no&quot;
  &gt;
    &lt;fileset dir=&quot;htdocs/manual&quot;&gt;
      &lt;include name=&quot;**/*.html&quot; /&gt;
    &lt;/fileset&gt;
  &lt;/ftp&gt;</pre>
<p>Logs in to <code>ftp.apache.org</code> at port <code>2121</code> as 
<code>coder</code> with password <code>java1</code> and uploads all new or 
changed HTML files in the <code>htdocs/manual</code> directory to the 
<code>/pub/incoming</code> directory.  The files are transferred in text
mode.</p>
<pre>  &lt;ftp server=&quot;ftp.nt.org&quot;
       remotedir=&quot;c:\uploads&quot;
       userid=&quot;coder&quot;
       password=&quot;java1&quot;
       separator=&quot;\&quot;
       verbose=&quot;yes&quot;
  &gt;
    &lt;fileset dir=&quot;htdocs/manual&quot;&gt;
      &lt;include name=&quot;**/*.html&quot; /&gt;
    &lt;/fileset&gt;
  &lt;/ftp&gt;</pre>
<p>Logs in to the Windows-based <code>ftp.nt.org</code> as 
<code>coder</code> with password <code>java1</code> and uploads all 
HTML files in the <code>htdocs/manual</code> directory to the 
<code>c:\uploads</code> directory.  Progress messages are displayed as each
file is uploaded.</p>
<h3>Getting Files</h3>
<p>Getting files from an FTP server works pretty much the same way as 
sending them does.  The only difference is that the nested filesets
use the remotedir attribute as the base directory for the files on the
FTP server, and the dir attribute as the local directory to put the files
into.  The file structure from the FTP site is preserved on the local machine.</p>
<pre>
  &lt;ftp action=&quot;get&quot;
       server=&quot;ftp.apache.org&quot;
       userid=&quot;anonymous&quot;
       password=&quot;me@myorg.com&quot;&gt;
    &lt;fileset dir=&quot;htdocs/manual&quot; &gt;
      &lt;include name=&quot;**/*.html&quot; /&gt;
    &lt;/fileset&gt;
  &lt;/ftp&gt;
</pre>
<p>Logs in to <code>ftp.apache.org</code> as <code>anonymous</code> and 
recursively downloads all .html files from default directory for that user 
into the <code>htdocs/manual</code> directory on the local machine.</p>
<h3>Deleting Files</h3>
As you've probably guessed by now, you use nested fileset elements to 
select the files to delete from the remote FTP server.  Again, the 
filesets are relative to the remote directory, not a local directory.  In
fact, the dir attribute of the fileset is ignored completely.
<pre>
  &lt;ftp action=&quot;del&quot;
       server=&quot;ftp.apache.org&quot;
       userid=&quot;anonymous&quot;
       password=&quot;me@myorg.com&quot; &gt;
    &lt;fileset&gt;
      &lt;include name=&quot;**/*.tmp&quot; /&gt;
    &lt;/fileset&gt;
  &lt;/ftp&gt;
</pre>
<p>Logs in to <code>ftp.apache.org</code> as <code>anonymous</code> and
tries to delete all *.tmp files from the default directory for that user.
If you don't have permission to delete a file, a BuildException is thrown.</p>
<h3>Listing Files</h3>
<pre>
  &lt;ftp action=&quot;list&quot;
       server=&quot;ftp.apache.org&quot;
       userid=quot;anonymous&quot;
       password=&quot;me@myorg.com&quot; 
       listing=&quot;data/ftp.listing&quot; &gt;
    &lt;fileset&gt;
      &lt;include name=&quot;**&quot; /&gt;
    &lt;/fileset&gt;
  &lt;/ftp&gt;
</pre>
<p>This provides a file listing in <code>data/ftp.listing</code> of all the files on
the FTP server relative to the default directory of the <code>anonymous</code>
user. The listing is in whatever format the FTP server normally lists files.</p>
<hr>
<h2><a name="netrexxc">NetRexxC</a></h2>
<h3>Description</h3>
<p>Compiles a <a href="http://www2.hursley.ibm.com/netrexx">NetRexx</a>
source tree within the running (Ant) VM.</p>
<p>The source and destination directory will be recursively scanned for
NetRexx source files to compile.  Only NetRexx files that have no corresponding
class file or where the class file is older than the java file will be compiled.</p>
<p>Files in the source tree are copied to the destination directory,
allowing support files to be located properly in the classpath. The source 
files are copied because the NetRexx compiler cannot produce class files in a
specific directory via parameters</p>
<p>The directory structure of the source tree should follow the package
hierarchy.</p>
<p>It is possible to refine the set of files that are being compiled/copied.
This can be done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and
<i>defaultexcludes</i> attributes. With the <i>includes</i> or <i>includesfile</i> attribute you 
specify the files you want to have included by using patterns. The 
<i>exclude</i> or <i>excludesfile</i> attribute is used to specify the files you want to have 
excluded.  This is also done with patterns.  And finally with the 
<i>defaultexcludes</i> attribute, you can specify whether you
want to use default exclusions or not. See the section on <a
href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns.</p>
<p>This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>srcdir</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>

<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">binary</td>
    <td valign="top">Whether literals are treated as the java binary
      type rather than the NetRexx types</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">classpath</td>
    <td valign="top">The classpath to use during compilation</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">comments</td>
    <td valign="top">Whether comments are passed through to the
      generated java source</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">compact</td>
    <td valign="top">Whether error messages come out in compact or
      verbose format</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">compile</td>
    <td valign="top">Whether the NetRexx compiler should compile the
      generated java code</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">console</td>
    <td valign="top">Whether or not messages should be displayed on the
      'console'</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">crossref</td>
    <td valign="top">Whether variable cross references are generated</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">decimal</td>
    <td valign="top">Whether decimal arithmetic should be used for the
      NetRexx code</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when
      omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">destDir</td>
    <td valign="top">the destination directory into which the NetRexx
      source files should be copied and then compiled</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">diag</td>
    <td valign="top">Whether diagnostic information about the compile is
      generated</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when
      omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">explicit</td>
    <td valign="top">Whether variables must be declared explicitly
      before use</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">format</td>
    <td valign="top">Whether the generated java code is formatted nicely
      or left to match NetRexx line numbers for call stack debugging</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">java</td>
    <td valign="top">Whether the generated java code is produced</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">keep</td>
    <td valign="top">Sets whether the generated java source file should be kept
      after compilation. The generated files will have an extension of
      .java.keep, <b>not</b> .java</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">logo</td>
    <td valign="top">Whether the compiler text logo is displayed when
      compiling</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">replace</td>
    <td valign="top">Whether the generated .java file should be replaced
      when compiling</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">savelog</td>
    <td valign="top">Whether the compiler messages will be written to
      NetRexxC.log as well as to the console</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">sourcedir</td>
    <td valign="top">Tells the NetRexx compiler to store the class files in the
      same directory as the source files. The alternative is the working
      directory</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">srcDir</td>
    <td valign="top">Set the source dir to find the source Netrexx
      files</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">strictargs</td>
    <td valign="top">Tells the NetRexx compiler that method calls always
      need parentheses, even if no arguments are needed, e.g. 
      <code>aStringVar.getBytes</code> vs. 
      <code>aStringVar.getBytes()</code></td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">strictassign</td>
    <td valign="top">Tells the NetRexx compile that assignments must
      match exactly on type</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">strictcase</td>
    <td valign="top">Specifies whether the NetRexx compiler should be
      case sensitive or not</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">strictimport</td>
    <td valign="top">Whether classes need to be imported explicitly using an 
      <code>import</code> statement.  By default the NetRexx compiler will 
      import certain packages automatically</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">strictprops</td>
    <td valign="top">Whether local properties need to be qualified
      explicitly using <code>this</code></td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">strictsignal</td>
    <td valign="top">Whether the compiler should force catching of
      exceptions by explicitly named types</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">symbols</td>
    <td valign="top">Whether debug symbols should be generated into the
      class file</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">time</td>
    <td valign="top">Asks the NetRexx compiler to print compilation
      times to the console</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">trace</td>
    <td valign="top">Turns on or off tracing and directs the resultant
      trace output</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">utf8</td>
    <td valign="top">Tells the NetRexx compiler that the source is in UTF8</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">verbose</td>
    <td valign="top">Whether lots of warnings and error messages should
      be generated</td>
    <td valign="top" align="center">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;netrexxc srcDir=&quot;/source/project&quot;
           includes=&quot;vnr/util/*&quot;
           destDir=&quot;/source/project/build&quot;
           classpath=&quot;/source/project2/proj.jar&quot;
           comments=&quot;true&quot;
           crossref=&quot;false&quot; replace=&quot;true&quot;
           keep=&quot;true&quot; /&gt;</code>
  </p>
</blockquote>
<hr>
<h2><a name="renameexts">RenameExtensions</a></h2>
<h3>Description</h3>
<p>Renames files in the <code>srcDir</code> directory ending with the
<code>fromExtension</code> string so that they end with the 
<code>toExtension</code> string. Files are only replaced if 
<code>replace</code> is true
</p>
<p>See the section on 
<a href="#directorybasedtasks">directory based tasks</a>, on how the
inclusion/exclusion of files works, and how to write patterns. 
This task forms an implicit <a href="#fileset">FileSet</a> and
supports all attributes of <code>&lt;fileset&gt;</code>
(<code>dir</code> becomes <code>srcDir</code>) as well as the nested
<code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code> and
<code>&lt;patternset&gt;</code> elements.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">defaultexcludes</td>
    <td valign="top">indicates whether default excludes should be used or not
      (&quot;yes&quot;/&quot;no&quot;). Default excludes are used when
      omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludes</td>
    <td valign="top">comma separated list of patterns of files that must be
      excluded. No files (except default excludes) are excluded when
      omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">excludesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an exclude pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">fromExtention</td>
    <td valign="top">The string that files must end in to be renamed</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">includes</td>
    <td valign="top">comma separated list of patterns of files that must be
      included. All files are included when omitted.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">includesfile</td>
    <td valign="top">the name of a file. Each line of this file is
      taken to be an include pattern</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">replace</td>
    <td valign="top">Whether the file being renamed to should be
      replaced if it already exists</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">srcDir</td>
    <td valign="top">The starting directory for files to search in</td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">toExtension</td>
    <td valign="top">The string that renamed files will end with on
      completion</td>
    <td valign="top" align="center">Yes</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;renameext srcDir=&quot;/source/project1&quot;
              includes=&quot;**&quot;
              excludes=&quot;**/samples/*&quot;
              fromExtension=&quot;.java.keep&quot;
              toExtension=&quot;.java&quot;
              replace=&quot;true&quot; /&gt;
</code>
  </p>
</blockquote>

<hr>
<h2><a name="script">Script</a></h2>
<h3>Description</h3>
<p>Execute a script in a 
  <a href="http://oss.software.ibm.com/developerworks/opensource/bsf/">BSF</a> supported language.
<p>All items (tasks, targets, etc) of the running project are
accessible from the script, using either their <code>name</code> or
<code>id</code> attributes.</p>
<p>Scripts can do almost anything a task written in Java could do.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">language</td>
    <td valign="top">The programming language the script is written in.
      Must be a supported BSF language</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">src</td>
    <td valign="top">The location of the script as a file, if not inline</td>
    <td valign="top" align="center">No</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote><pre>
&lt;project name=&quot;squares&quot; default=&quot;main&quot; basedir=&quot;.&quot;&gt;

  &lt;target name=&quot;setup&quot;&gt;

    &lt;script language=&quot;javascript&quot;&gt; &lt;![CDATA[

      for (i=1; i&lt;=10; i++) {
        echo = squares.createTask(&quot;echo&quot;);
        main.addTask(echo);
        echo.setMessage(i*i);
      }

    ]]&gt; &lt;/script&gt;

  &lt;/target&gt;

  &lt;target name=&quot;main&quot; depends=&quot;setup&quot; /&gt;

&lt;/project&gt;
</pre></blockquote>
<p>generates</p>
<blockquote><pre>
setup:

main:
1
4
9
16
25
36
49
64
81
100

BUILD SUCCESSFUL
</pre></blockquote>
<p>Another example, using <a href="#references">references by id</a>
and two different scripting languages:</p>
<blockquote><pre>
&lt;project name=&quot;testscript&quot; default=&quot;main&quot;&gt;
  &lt;target name=&quot;sub&quot;&gt;
    &lt;echo id=&quot;theEcho&quot; /&gt;
  &lt;/target&gt;

  &lt;target name=&quot;sub1&quot;&gt;
    &lt;script language=&quot;netrexx&quot;&gt;&lt;![CDATA[
      theEcho.setMessage(&quot;In sub1&quot;)
      sub.execute
    ]]&gt;&lt;/script&gt;
  &lt;/target&gt;

  &lt;target name=&quot;sub2&quot;&gt;
    &lt;script language=&quot;javascript&quot;&gt;&lt;![CDATA[
      theEcho.setMessage(&quot;In sub2&quot;);
      sub.execute();
    ]]&gt;&lt;/script&gt;
  &lt;/target&gt;

  &lt;target name=&quot;main&quot; depends=&quot;sub1,sub2&quot; /&gt;
&lt;/project&gt;
</pre></blockquote>
<p>generates</p>
<blockquote><pre>
sub1:
In sub1

sub2:
In sub2

main:

BUILD SUCCESSFUL
</pre></blockquote>
<hr>
<h2><a name="vssget">VssGet</a></h2>
<h3>Description</h3>
Task to perform GET commands to Microsoft Visual Source Safe.
<p>If you specify two or more attributes from version, date and 
label only one will be used in the order version, date, label.</p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <th>Attribute</th>
    <th>Values</th>
    <th>Required</th>
  </tr>
  <tr>
     <td>login</td>
     <td>username,password</td>
     <td>No</td>
  </tr>
  <tr>
     <td>vsspath</td>
     <td>SourceSafe path</td>
     <td>Yes</td>
  </tr>
  <tr>
     <td>localpath</td>
     <td>Override the working directory and get to the specified path</td>
     <td>No</td>
  </tr>
  <tr>
     <td>writable</td>
     <td>true or false</td>
     <td>No</td>
  </tr>
  <tr>
     <td>recursive</td>
     <td>true or false</td>
     <td>No</td>
  </tr>
  <tr>
     <td>version</td>
     <td>a version number to get</td>
     <td>No</td>
  </tr>
  <tr>
     <td>date</td>
     <td>a date stamp to get at</td>
     <td>No</td>
  </tr>
  <tr>
     <td>label</td>
     <td>a label to get for</td>
     <td>No</td>
  </tr>
  <tr>
     <td>ssdir</td>
     <td>directory where <code>ss.exe</code> resides. By default the
     task expects it to be in the PATH.</td>
     <td>No</td>
  </tr>
</table>
<p>Note that only one of version, date or label should be specified</p>
<h3>Examples</h3>
<blockquote>
<pre>
&lt;vssget localPath=&quot;C:\mysrc\myproject&quot;
        recursive=&quot;true&quot; 
        label=&quot;Release1&quot;
        login=&quot;me,mypassword&quot;
        vsspath=&quot;/source/aProject&quot;
        writable=&quot;true&quot;/&gt;
</pre>
</blockquote>
<p>Does a get on the VSS-Project <i>$/source/aproject</i> using the username
<i>me</i> and the password <i>mypassword</i>. It will recursively get the files 
which are labeled <i>Release1</i> and write them to the local directory
<i>C:\mysrc\myproject</i>. The local files will be writable.</p>
<hr>
<h2><a name="buildevents">Build Events</a></h2>
Ant is capable of generating build events as it performs the tasks necessary to build a project. 
Listeners can be attached to ant to receive these events. This capability could be used, for example,
to connect Ant to a GUI or to integrate Ant with an IDE. 

<p>To use build events you need to create an ant <code>Project</code> object. You can then call the 
<code>addBuildListener</code> method to add your listener to the project. Your listener must implement
the <code>org.apache.tools.antBuildListener</code> interface. The listener will receive BuildEvents 
for the following events
<ul>
<li>Build started
<li>Build finished
<li>Target started
<li>Target finished
<li>Task started
<li>Task finished
<li>Message logged
</ul>

If you wish to attach a listener from the command line you may use the -listener option. For example
<blockquote>
  <pre>ant -listener org.apache.tools.ant.XmlLogger</pre>
</blockquote>
will run ant with a listener which generates an XML representation of the build progress. This 
listener is included with ant as is the default listener which generates the logging to standard
output.


<hr>
<h2><a name="writingowntask">Writing your own task</a></h2>
<p>It is very easy to write your own task:</p>
<ol>
  <li>Create a Java class that extends <code>org.apache.tools.ant.Task</code>.</li>
  <li>For each attribute, write a setter method. The setter method must be a 
    <code>public void</code> method that takes a single argument. The
    name of the method must begin with &quot;set&quot;, followed by the
    attribute name, with the first character in uppercase, and the rest in
    lowercase. The type of the attribute can be <code>String</code>, any 
    primitive type (they are converted for you from their String-representation
	in the build-file. If you specify a boolean your method will be passed the value 
	<i>true</i> if the value specified in the build-file is one of &quot;true&quot;,
	&quot;yes&quot; or &quot;on&quot;), <code>Class</code>, <code>File</code>
	(in which case the value of the attribute is interpreted relative to the 
	project's basedir) or any other type that has a constructor with a single 
	<code>String</code> argument</li>
  <li>If your task has enumerated attributes, you should consider using
    a subclass of org.apache.tools.ant.types.EnumeratedAttribute as argument
    to your setter method. See org.apache.tools.ant.taskdefs.FixCRLF for
    an example.</li>
  <li>If the task should support character data, write a <code>public void 
    addText(String)</code> method.</li>
  <li>For each nested element, write a create or add method. A create method 
    must be a <code>public</code> method that takes no arguments and returns 
    an Object type. The name of the create method must begin with 
    &quot;create&quot;, followed by the element name. An add method must be 
    a <code>public void</code> method that takes a single argument of an 
    Object type with a no argument constructor. The name of the add method 
    must begin with &quot;add&quot;, followed by the element name.
  <li>Write a <code>public void execute</code> method, with no arguments, that
    throws a <code>BuildException</code>. This method implements the task
    itself.</li>
</ol>
<h3>The life cycle of a task</h3>
<ol>
  <li>The task gets instantiated using a no-arg constructor at parser
    time. This means even tasks that are never executed get
    instantiated.</li>

  <li>The tasks gets references to its project and location inside the
    build file via their inherited <code>project</code> and
    <code>location</code> variables.</li>

  <li>If the user specified an id attribute to this task, the project
    registers a reference to this newly created task - at parser
    time.</li>

  <li>The task gets a reference to the target it belongs to via its
    inherited <code>target</code> variable.</li>

  <li><code>init()</code> is called at parser time.</li>

  <li>All child elements of the XML element corresponding to this task
    are created via this task's <code>createXXX()</code> methods or
    instantiated and added to this task via its <code>addXXX()</code>
    methods - at parser time.</li>

  <li>All attributes of this task get set via their corresponding
    <code>setXXX</code> methods - at runtime.</li>

  <li>The content character data sections inside the XML element
    corresponding to this task is added to the task via its
    <code>addText</code> method - at runtime.</li>

  <li>All attributes of all child elements get set via their corresponding
    <code>setXXX</code> methods - at runtime.</li>

  <li><code>execute()</code> is called at runtime.</li>

</ol>
<h3>Example</h3>
<p>Let's write our own task, that prints a message on the System.out stream. The
task has one attribute called &quot;message&quot;.</p>
<blockquote>
  <pre>package com.mydomain;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;

public class MyVeryOwnTask extends Task {
  private String msg;

  // The method executing the task
  public void execute() throws BuildException {
    System.out.println(msg);
  }

  // The setter for the &quot;message&quot; attribute
  public void setMessage(String msg) {
    this.msg = msg;
  }
}</pre>
</blockquote>
<p>It's really this simple;-)</p>
<p>Adding your task to the system is rather simple too:</p>
<ol>
  <li>Make sure the class that implements your task is in the classpath when
    starting Ant.</li>
  <li>Add a <i>taskdef</i> element to your project. This actually adds
    your task to the system.</li>
  <li>Use your task in the rest of the buildfile.</li>
</ol>
<h3>Example</h3>
<blockquote>
  <pre>&lt;?xml version=&quot;1.0&quot;?&gt;

&lt;project name=&quot;OwnTaskExample&quot; default=&quot;main&quot; basedir=&quot;.&quot;&gt;
  &lt;taskdef name=&quot;mytask&quot; classname=&quot;com.mydomain.MyVeryOwnTask&quot;/&gt;

  &lt;target name=&quot;main&quot;&gt;
    &lt;mytask message=&quot;Hello World! MyVeryOwnTask works!&quot; /&gt;
  &lt;/target&gt;
&lt;/project&gt;
</pre>
</blockquote>
<p>Another way to add a task (more permanently), is to add the task name and
implementing class name to the <code>default.properties</code> file in the <code>org.apache.tools.ant.taskdefs</code>
package. Then you can use it as if it were a built in task.</p>
<hr>
<h2><a name="faq">FAQ, DTD, external resources</a></h2>
<p>There is an online FAQ for Ant at <a
href="http://jakarta.apache.org/jyve-faq/Turbine/screen/DisplayTopics/action/SetAll/project_id/2/faq_id/16">jakarta.apache.org</a>. This
FAQ is interactive, which means you can ask and answer questions
online.</p>
<p>One of the questions poping up quite often is &quot;Is there a DTD for
buildfiles?&quot;. Please refer to the FAQ for an answer.</p>
<hr>
<h2><a name="feedback">Feedback</a></h2>
<p>To provide feedback on this software, please subscribe to the Ant User
Mail List (<a href="mailto:ant-user-subscribe@jakarta.apache.org">ant-user-subscribe@jakarta.apache.org</a>)</p>
<p>If you want to contribute to Ant or stay current with the latest
development, join the Ant Development Mail List (<a
href="mailto:ant-dev-subscribe@jakarta.apache.org">ant-dev-subscribe@jakarta.apache.org</a>)</p>
<p>Archives of both lists can be found at <a
href="http://archive.covalent.net/">http://archive.covalent.net/</a>. Many
thanks to Covalent Technologies.</p>
<hr>
<p align="center">Copyright &copy; 2000 Apache Software Foundation. All rights
Reserved.</p>

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