Remove System.exit calls.

These have been replaced by propagating BuildExceptions. This will allow ant
to be more easily used from GUIs, IDEs, etc


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@267698 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/Main.java

@@ -106,7 +106,7 @@ public class Main {
         new Main(args).runBuild();
     }
 
-    protected Main(String[] args) {
+    protected Main(String[] args) throws BuildException {
 
         // cycle through given args
 
@@ -216,7 +216,7 @@ public class Main {
      * Executes the build.
      */
 
-    private void runBuild() {
+    private void runBuild() throws BuildException {
 
         if (!readyToRun) {
             return;
@@ -265,7 +265,7 @@ public class Main {
             } else {
                 be.getException().printStackTrace();
 	    }
-            System.exit(1);
+	    throw be;
         }
 
         // make sure that we have a target to execute
@@ -282,7 +282,7 @@ public class Main {
             if (msgOutputLevel > Project.MSG_INFO) {
                 be.printStackTrace();
             }
-            System.exit(1);
+            throw be;
         }
 
         // track our stop time and let the user know how long things took.

src/main/org/apache/tools/ant/Project.java

@@ -116,7 +116,7 @@ public class Project {
      * This involves setting the default task definitions and loading the
      * system properties.
      */
-    public void init() {
+    public void init() throws BuildException {
         detectJavaVersion();
 
         String defs = "/org/apache/tools/ant/taskdefs/defaults.properties";
@@ -149,9 +149,7 @@ public class Project {
                 this.setProperty(name, value);
             }
         } catch (IOException ioe) {
-            String msg = "Can't load default task list";
-            System.out.println(msg);
-            System.exit(1);
+            throw new BuildException("Can't load default task list");
         }
     }