JOptionPane showConfirmDialog problem

Question

Hello everyone,
I have written my own class that shows a customized confirm dialog (code is pasted below). I need to be able to tell whether the user clicks "YES", "NO" or "CANCEL".
My main app has a panel with a JButton "Start System". When this button is clicked, the following code instantiates OperatorConfirmDialog:
     public void startNetwork(){
          confirmDialog = new OperatorConfirmDialog("Are you sure you want to start the network?");
          System.out.println("WE MADE IT TO HERE");//problem we do not get to here until confirm dialog acked
     }I referred to the examples for JOptionPane given at:
http://java.sun.com/j2se/1.5.0/docs/api/index.html
for examples but it doesn't seem to be working for me.
Here is the code for OperatorConfirmDialog
public class OperatorConfirmDialog extends JFrame {
     JOptionPane pane;
     public OperatorConfirmDialog(String message){
          pane = new JOptionPane();
          this.setDefaultLookAndFeelDecorated(true);
          this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          this.getContentPane().setLayout(new BorderLayout());
          pack();
          //pane.getSelectionValues()
          pane.showConfirmDialog(this, message, "Confirm", JOptionPane.YES_NO_CANCEL_OPTION);
          Object selectedValue = pane.getValue();  //problem here
          if(selectedValue == null){
               //do nothing...they just killed window
          }else {
               for(int counter = 0, maxCounter = pane.getOptions().length; counter < maxCounter; counter++){
                    if(pane.getOptions()[counter].equals(selectedValue)){
                         //do something
          this.dispose();
     public JOptionPane getPane(){
          return pane;
     public static void main(String[] args) {
          OperatorConfirmDialog dialog = new OperatorConfirmDialog("Please enter a valid username.");
}I put a break point at the line:
if(selectedValue == null){
When I run the debugger, confirmDialog prompts me to click "YES", "NO" or "CANCEL". I click "YES" and then arrive at the breakpoint. But, selectedValue doesn't seem to have the right value....the debugger says its value is "uninitializedValue" (literally). Any ideas?
Thanks!

Answer 1

Try this. Notice I received an int result from the showConfirmDialog() method.
import javax.swing.*;
import java.awt.*;
public class OperatorConfirmDialog extends JFrame {
    JOptionPane pane;
    public OperatorConfirmDialog(String message) {
        pane = new JOptionPane();
        this.setDefaultLookAndFeelDecorated(true);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.getContentPane().setLayout(new BorderLayout());
        pack();
// get the response from the user
        int result = pane.showConfirmDialog(this, message, "Confirm", JOptionPane.YES_NO_CANCEL_OPTION);
        if (JOptionPane.YES_OPTION == result) {
            // do what you want on 'yes' clicked
            System.out.println("User Clicked 'Yes'.");
        } else {
// user clicked 'no' or 'cancel'... you could check result for JOptionPane.NO_OPTION or CANCEL_OPTION
            System.out.println("User Clicked either 'No' or 'Cancel'.");
        this.dispose();
    public JOptionPane getPane() {
        return pane;
    public static void main(String[] args) {
        OperatorConfirmDialog dialog = new OperatorConfirmDialog("Please enter a valid username.");
}