java - Create custom operation for setDefaultCloseOperation?

Question

I want to make my Java Application to call my own custom made function when the "close" cross button is pressed. as far as i see there may be no way since setDefaultCloseOperation has no overloads at all.

Any idea how this can be achieved?

Answer 1

maybe this one, but before that read tutorial WindowListener posted by Howard, there are some/another options

WindowListener exitListener = new WindowAdapter() {

    @Override
    public void windowClosing(WindowEvent e) {
        int confirm = JOptionPane.showOptionDialog(
             null, "Are You Sure to Close Application?", 
             "Exit Confirmation", JOptionPane.YES_NO_OPTION, 
             JOptionPane.QUESTION_MESSAGE, null, null, null);
        if (confirm == 0) {
           System.exit(0);
        }
    }
};
frame.addWindowListener(exitListener);