Window closing error

Question

i written a java program for swing form. the form having default window close button. if i click on close button i displayed a dialog contained Yes-No-Calcel . if i click on cancel it will be exit. How can i stop the window closing.

Answer 1

Look at this codes:
import java.awt.event.*;
import javax.swing.*;
public class ClosingFrame extends JFrame {
     public ClosingFrame() {
          super("Closing frame");
          setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
          addWindowListener(new WindowAdapter() {
               public void windowClosing(WindowEvent e) {
                    int res = JOptionPane.showConfirmDialog(ClosingFrame.this, "Do you want to quit?", "Exit", JOptionPane.YES_NO_OPTION);
                    if (res == JOptionPane.YES_OPTION) {
                         System.out.println("Bye");
                         System.exit(0);
                    else {
                         System.out.println("So you stay!");
          setSize(200,200);
          setLocationRelativeTo(null);
          setVisible(true);
     public static void main(String[] args) {
          new ClosingFrame();
}Denis