ant/check.xml

<project default="checkstyle" name="CheckAnt">
  <property name="java.dir" value="src/main"/>
  <property name="tocheck" value="**/*.java"/>
  <property name="javadoc.scope" value="public"/>

  <target name="checkstyle">
    <taskdef name="checkstyle"
             classname="com.puppycrawl.tools.checkstyle.CheckStyleTask"/>
    <checkstyle>
      <property key="checkstyle.header.file" file="src/etc/RequiredHeader.txt"/>
      <property key="checkstyle.header.ignoreline" value="4"/>
      <property key="checkstyle.javadoc.scope" value="${javadoc.scope}"/>
      <fileset dir="${java.dir}">
        <include name="${tocheck}"/>
      </fileset>
    </checkstyle>
  </target>

</project>