make certain method when closing a window in GUI

Question

I've made a Notepad program and i wonder how can i create a popup window which pops up when i click on the "close" button and ask the user if he would like to save the content which was written in the note pad.

I was think of JOptionPane as a solution but not sure how to add buttons to the window it creates and how to call the "popup" window.

in the actionPerformed linked to the 'close' button? – Stultuske Dec 02 '15 at 08:57 — Stultuske, Dec 02 '15 at 08:57

score 0 · Answer 1 · answered Dec 02 '15 at 09:40

write the code for showing JOptionPane object within the windowClosing(WindowEvent e){} method of the WindowListener interface by implementing the interface with the application's main class.

Visit this link for more information: Java windows listener interface methods

score 0 · Answer 2 · answered Dec 02 '15 at 09:51

This is the code to "listen" when the user closes the window (Clicks "X") :

yourJFrame.addWindowListener(new WindowAdapter() {     
        public void windowClosing(WindowEvent e) {

                //your code , you can create the JOptionPane here.

        }
 });

make certain method when closing a window in GUI

2 Answers2