Mengapa Kursor Tunggu Java Saya Tidak Muncul Di Atas Kursor Tersuai?

public class BusyCursorTest extends javax.swing.JFrame {

    private javax.swing.JPanel cursorPanel = null;

    // ... (remaining code)

    public static void main(String[] args) {
        new BusyCursorTest();
    }

    public static java.awt.event.ActionListener getActionListener(final javax.swing.JFrame frame,
        final java.awt.event.ActionListener originalActionListener) {

        java.awt.event.ActionListener actionListener = new java.awt.event.ActionListener() {

            public void actionPerformed(final java.awt.event.ActionEvent e) {

                java.util.TimerTask timerTask = new java.util.TimerTask() {

                    public void run() {
                        originalCursor = frame.getCursor();
                        startWaitCursor(frame);
                    }

                };
                java.util.Timer timer = new java.util.Timer();

                try {
                    timer.schedule(timerTask, DELAY_MS);
                    originalActionListener.actionPerformed(e);
                } finally {
                    timer.cancel();
                    stopWaitCursor(frame);
                }
            }

        };
        return actionListener;
    }

    private static void startWaitCursor(javax.swing.JFrame frame) {
        frame.getGlassPane().setCursor(java.awt.Cursor.getPredefinedCursor(java.awt.Cursor.WAIT_CURSOR));
        frame.getGlassPane().addMouseListener(mouseAdapter);
        frame.getGlassPane().setVisible(true);
    }

    private static void stopWaitCursor(javax.swing.JFrame frame) {
        frame.getGlassPane().setCursor(originalCursor);
        frame.getGlassPane().removeMouseListener(mouseAdapter);
        frame.getGlassPane().setVisible(false);
    }

    // ... (remaining code)
}