问在Mac OS X上使用Ant执行其他Java应用程序的Java应用程序

EN

public void launchAnt(ApplicationData applicationData) {
    Project project = new Project();
    project.setBaseDir(new File(System.getProperty("user.dir")));
    project.init();
    DefaultLogger logger = new DefaultLogger();
    project.addBuildListener(logger);
    logger.setOutputPrintStream(System.out);
    logger.setErrorPrintStream(System.err);
    logger.setMessageOutputLevel(Project.MSG_INFO);
    System.setOut(new PrintStream(new DemuxOutputStream(project, false)));
    System.setErr(new PrintStream(new DemuxOutputStream(project, true)));
    project.fireBuildStarted();

    System.out.println("ApplicationLauncher.launch(): Running");
    Throwable caught = null;
    try {
        /**
         * Create Java task
         */
        Java javaTask = new Java();
        javaTask.setTaskName("Run " + applicationData.getApplication().name());
        javaTask.setProject(project);
        javaTask.setFork(false);
        javaTask.setFailonerror(true);
        javaTask.setClassname(applicationData.getClassName());

        /**
         * Working directory
         */
        File workdir = new File(System.getProperty("user.dir"));
        if(workdir.exists()) {
            javaTask.setDir(workdir);
        } else {
            System.out.println("ApplicationLauncher.launch(): ERROR: Unable to set workdir, " + workdir.getAbsolutePath() + " does note exist.");
        }

        /**
         * Classpath
         */
        Path path = new Path(project);
        Collection<String> classpaths = getClasspath();
        for (String classpath : classpaths) {
            Path currPath = new Path(project, new File(classpath).getAbsolutePath());
            path.add(currPath);
        }
        System.out.println("ApplicationLauncher.launch(): Classpath: " + path.toString());
        javaTask.setClasspath(path);

        /**
         * Arguments
         */
        Argument arg = javaTask.createArg();
        arg.setValue(applicationData.getArguments());

        /**
         * Initiate and execute
         */
        javaTask.init();
        int ret = javaTask.executeJava();
        System.out.println("ApplicationLauncher.launch(): Java task return code: " + ret);
    } catch (BuildException e) {
        caught = e;
    }

    project.log("ApplicationLauncher.launch(): Finished");
    project.fireBuildFinished(caught);
}

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

java.lang.ClassNotFoundException: apple.laf.AquaLookAndFeel
    at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1361)
    at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1311)
    at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1070)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:242)
    at javax.swing.SwingUtilities.loadSystemClass(SwingUtilities.java:1788)
    at javax.swing.UIManager.setLookAndFeel(UIManager.java:484)