获取鼠标监听器来监听java applet？

Question

我目前正在尝试让一个MouseListener来监听一个java applet，但它无法正常工作我不确定以下代码有什么问题，是否有人能够帮助找到错误？此外，我意识到java applet几乎已经折旧了，但是对于我正在做的某些事情它是必要的。

public class loader extends JPanel {
    private createApplet applet= new createApplet();

    public loader(final boolean oldschool) {
        setLayout(new BorderLayout());

        add(applet.getApplet(), BorderLayout.CENTER);

        MouseListener test = new MouseListener() {
            @Override
            public void mouseClicked(MouseEvent e) {
                System.out.println("test");
            }

            @Override
            public void mousePressed(MouseEvent e) {
                System.out.println("test");
            }

            @Override
            public void mouseReleased(MouseEvent e) {
                System.out.println("test");
            }

            @Override
            public void mouseEntered(MouseEvent e) {
                System.out.println("test");
            }

            @Override
            public void mouseExited(MouseEvent e) {
                System.out.println("test");
            }
        };

        // Adds test mouse listener to instance of applet
        applet.addMouseListener(test);
        revalidate();
    }

}

class createApplet extends Applet implements AppletStub {
    Applet applet = this;

    public createApplet () {

        downloadAndCreate();
    }

    public void downloadAndCreate() {

        // Code that downloads applet and sets it etc here


        /*
            Set the applet stub
         */
        applet.setStub(this);

        /*
            Initialize the applet
         */
        applet.init();

        /*
            Start the applet
         */
        applet.start();
    }
}