Opening a prompt window before closing window when click on the x box

Question

I was wondering if there was a way to have a prompt box asking the user if they're sure they want to close the window before closing it when the x button is clicked. Is this possible? Does anyone know how?

Answer 1

Or simply override:
    /** Overridde method in JFrame */
    protected void processWindowEvent(WindowEvent e)
        if(e.getID()==WindowEvent.WINDOW_CLOSING)
            int choice = JOptionPane.showConfirmDialog( null, "Are you e?" );     
            if( choice == JOptionPane.OK_OPTION )
                System.exit(0);
        super.processWindowEvent(e);
    }