Hello,
I'm new to ant api. i would like to compile a source from my
application, and i wrote the method below.

When i execute it, i get a NullPointerException at
org.apache.tools.ant.taskdefs.Javac.execute (Javac.java:807)

where it says: File srcDir = getProject().resolveFile(list[i]);
(it's on the last instruction of this snippet, task.execute())

so i guess i screwed up with all the Path stuff..
But how to create and set up a Path object to feed Javac object?
thanks in advance,
Paolo



 public void subsystemCreate(String id, String poolSize) {
 
   String beanName = "BpsAgent"+id;
   String jbossHome =
System.getProperty("jboss.home.dir"+"/"); String serverHome =
System.getProperty("jboss.server.home.dir"+"/"); String tmpDir =
System.getProperty("jboss.server.home.dir")+"/deploy/"+appName+".ear/tmp/src/com/mersy/batch/mdb/";
String appDir =
System.getProperty("jboss.server.home.dir")+"/deploy/"+appName+".ear/";
String src =
System.getProperty("jboss.server.home.dir")+"/deploy/"+appName+".ear/tmp/src/";
String dst =
System.getProperty("jboss.server.home.dir")+"/deploy/"+appName+".ear/tmp/bin/";
System.out.println(beanName); System.out.println(jbossHome);
System.out.println(serverHome); System.out.println(tmpDir);
   System.out.println(appDir);
   System.out.println(src);
   System.out.println(dst);
   
   
   boolean success = (new File(tmpDir)).mkdirs();
    if (!success) {
      System.out.println("Megaerrore1");
      return ;
    }
   
   File dstPath=new File(dst);
   success = (dstPath.mkdirs());
    if (!success) {
      System.out.println("Megaerrore2");
      return ;
    }
   
    createMdb(id,poolSize,tmpDir);
   
   
   Project project = new Project();
   Path path = new Path(project);
   path.setPath(jbossHome+"/lib/hibernate3.jar;" +
       serverHome+"/lib/ejb3-persistence.jar;"
+ serverHome+"/lib/hibernate-annotations.jar;"+
       serverHome+"/lib/jboss-remoting.jar;"+
       serverHome+"/deploy/ejb3.deployer/jboss-ejb3.jar;"+
       serverHome+"/deploy/ejb3.deployer/jboss-ejb3x.jar;"+
       serverHome+"/deploy/ejb3.deployer/jboss-annotations-ejb3.jar;"+
       appDir+"/locallib/javaee.jar;"+
       appDir+"/locallib/a001llayer.jar;"+
       serverHome+"/lib/log4j.jar");
   
   Path srcPath=new Path(project);
   srcPath.setPath(src);
   

   
   Javac task = new Javac();
   
   task.setSrcdir(srcPath);
   task.setDestdir(dstPath);
   task.setClasspath(path);
   
   task.execute();
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