Thread.sleep() stopping my paint?

Question

I\'m making a program that is trying to animate a card moving across the screen as if you actually drew it from a desk. Here is the code for the animating:

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Answer 1

The problem is you call Thread.sleep() in the Event Dispatch Thread causing the GUI become unresponsive. To avoid this you may want to use Swing Timer instead:

   Timer timer = new Timer(50, new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            if(!stop) {
                gamePanel.repaint();
            } else {
                ((Timer)e.getSource()).stop();
            }
        }
    });
    timer.setRepeats(true);
    timer.setDelay(50);
    timer.start();

Where stop is a boolean flag that indicates the animation must stop.