Splash screen in addActionListener

Question

I need to show a splash screen on button click. When I click the button the splash has to be visible, I do some process which runs on the background. After the background process finishes, the splash has to disappear. I used the following code, but the splash doesn't visible. When I use the same code in main class, it works.

btnClickToMove.addActionListener(new ActionListener() {

                public void actionPerformed(ActionEvent e) {
    JWindow window = new JWindow();
                    window.getContentPane().add(
                                    new JLabel("Loading JFrame...", SwingConstants.CENTER));
                    window.setBounds(200, 200, 200, 100);
                    window.setVisible(true);
                    try {
                            Thread.sleep(5000);
                    } catch (InterruptedException e) {
                            e.printStackTrace();
                    }

    // my process which runs on background.......

      window.setVisible(false);
      window.dispose();
        }
            });

Answer 1

Don't perform long running tasks on the EDT. Use a SwingWorker, and see Concurrency in Swing for more details.