How can I stop a JFrame from closing when clicking the close button.

Question

I need to display a dialog when a user attempts to close my app, giving them the option to close, minimize or cancel. How can I stop the form from closing after the user makes his selection? I have the folllowing code, but my form still closes after selecting an option:
private void formWindowClosing(java.awt.event.WindowEvent evt) {                                  
        //An array of Strings to be used a buttons in a JOptionDialog
        String[] options = {"Close", "Minimize", "Cancel"};
        //Determines what the user wants to do
        int result = JOptionPane.showOptionDialog(null, "What to you want to do?  Close the application, minimize or cancel?", "Please select an option...", 0, JOptionPane.QUESTION_MESSAGE, null, options, options[0]);
       //Determines what to do, depending on the user's choice
        if (result == 0) {
            //Close the application
            System.exit(0);
        } else if (result == 1) {
            //Minimize the application
            this.setState(Frame.ICONIFIED);
    }Any help would be much appreciated!

Answer 1

import java.awt.event.*;
import javax.swing.*;
public class test extends JFrame {
     public static void main( String[] args ) {
          new test();
     public test() {
          setSize( 200, 200 );
          //the next line makes the JFrame not close
          setDefaultCloseOperation( JFrame.DO_NOTHING_ON_CLOSE );
          //now add a listener that does the trick
          addWindowListener( new WindowAdapter() {
                    public void windowClosing( WindowEvent e ) {
                         //ask the user and do whatever you wish
          setVisible( true );
}