Trying to center frame, but affects my Robot method

Question

Hi, I am using a robot to take a screen shot of the users screen, which will then display on top of the screen with a piece of text printed. This works fine, but when I try to center the frame that holds the information the background is replaced with a grey box (with my text in). Is there any way I could get around this at all? Here is the relevant code, all help is very much appreciated. Thank-you :)
    public void createPanel()
        JFrame frame = new JFrame();
        frame.setUndecorated(true);
        frame.setLayout(new BorderLayout());
        MyDisplay test = new MyDisplay(frame);
        test.setLayout(new BorderLayout());
        frame.add(test, BorderLayout.CENTER);
        JLabel label = new JLabel("This is just a test");
        test.add(label, BorderLayout.CENTER);
        frame.pack();
        frame.setSize(500, 200);
        // make sure you pack and/or set size first...
        Dimension dS = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension dF = frame.getSize();
        // make sure it's not off screen
        int x = (dS.width/2)-(dF.width/2);
        int y = (dS.height/2)-(dF.height/2);
        if(x < 0) x = 0;
        if(y < 0) y = 0;
        frame.setLocation(x, y);
        frame.setVisible(true);
        startRobot();
    public void startRobot()
        try {
            robot = new Robot();
            Rectangle r = new Rectangle(500, 200);
            background = robot.createScreenCapture(r);
        catch (Exception e) {
    }

Answer 1

Swing related questions should be posted in the Swing
forum.
If it's swing you want to use,
I will kindly spread the news.
Camickr's the one to ask,
Ask him first, don't wait till last.
You must post in proper place,
or the egg is on your face.
Post where swing will be discussed,
don't be makin' such a fuss.
If gui is what you require,
'bout the swing you should inquire.
"New to Java" ain't for you,
Swing's what you should really do.