What are the methods for closing the current jframe window?

1. Implement window close event using the WindowListener interface.

frame.addWindowListener(new WindowAdapter() {
    @Override
    public void windowClosing(WindowEvent e) {
        frame.dispose();
    }
});

1. Close the window by calling the dispose() method.

frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

1. Close the window and application using System.exit(0).

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);