Ask user if wants to quit via JOptionPane

Question

I'm using this code to confirm the user whether wants to quit or not when he CLICKS THE RED CROSS CLOSE BUTTON OF JFrame (right upper corner)

 Object[] options = {"Quit, My Computing Fellow", "No, I want to Work more"};

int Answer = JOptionPane.showOptionDialog(null, "What would you like to do? ","Quit:Continue", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE,
    null, options,options[1]);
    if(Answer == JOptionPane.YES_OPTION){

        System.exit(0); 
    }
    else if (Answer == JOptionPane.CANCEL_OPTION) {
        return;
    }

but the problem is if the user clicks CANCEL_OPTION the Frame Closes at all, but i want the user to still open the Frame and not allow the Frame to close. Guide me If I'm doing the blunder or something else?

wrong decision, see answer by @Vishal K, and code linked in my comment — mKorbel, May 03 '13 at 22:22

score 2 · Answer 1 · answered May 03 '13 at 20:45

2

just do this:

setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

answered May 03 '13 at 20:45

Dima

8,586
4
28
57

actually i was calling the CANCEL_OPTION instead of NO_OPTION ! +1 for you. Thanks for reply – Tech Nerd May 03 '13 at 20:55

Vishal K · Answer 2 · 2013-05-03T21:21:49.500

You can try something like this:

    import javax.swing.*;
    import java.awt.event.*;
    public class MyFrame extends JFrame
    {
        public MyFrame()
        {
            setTitle("Close Me");
            setSize(200,200);
            setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
            addWindowListener(new WindowAdapter()
            {
                    @Override
                    public void windowClosing(WindowEvent evt)
                    {
                        Object[] options = {"Quit, My Computing Fellow", "No, I want to Work more"};

                        int answer = JOptionPane.showOptionDialog(MyFrame.this, "What would you like to do? ","Quit:Continue", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE,
                                     null, options,options[1]);
                        if(answer == JOptionPane.YES_OPTION)
                        {
                            System.exit(0); 
                        }
                    }
            });
        }
        public static void main(String st[])
        {
            SwingUtilities.invokeLater(new Runnable()
            {
                public void run()
                {
                    MyFrame mf = new MyFrame();
                    mf.setVisible(true);
                }
            });
        }
    }

As a side note I would suggest you to stick with java naming conventions. For example the variable name should never start with capital letter, class name should always start with capital letter .. And many more. Have a look at here Code Conventions for the Java Programming Language

[WindowListener not required to change setDefaultCloseOperation](http://stackoverflow.com/a/9228595/714968), is there for listening, out of votes for today — mKorbel, May 03 '13 at 22:21

Tech Nerd · Accepted Answer · 2013-05-03T21:01:09.683

I have a Real blunder

   Object[] options = {"Quit, My Computing Fellow", "No, I want to Work more"};

   int Answer = JOptionPane.showOptionDialog(null, "What would you like to do?","Quit:Continue", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE,
null, options,options[1]);
if(Answer == JOptionPane.YES_OPTION){

    System.exit(0); 
}
else if (Answer == JOptionPane.CANCEL_OPTION) {
    return;
}

It was clear that I have two Options i.e YES_NO_OPTION and I was calling the CANCEL_OPTION that was a real blunder so, the else-if should be changed to:

else if (Answer == JOptionPane.NO_OPTION) {
    this.setDefaultCloseOperation(myclassreference.DO_NOTHING_ON_CLOSE);
}

after this; its bingo !!! I've done!

Already Done@ Azad Omer but that was not a COMPLETE answer you know read my question you will find the real bluder — Tech Nerd, May 03 '13 at 21:00

score 0 · Answer 4 · answered May 03 '13 at 21:00

0

try something like this:

{
...
yourFrame.setDefaultCloseOperation(close());
...
}

private int close() {
if(yourCondition)
    return JFrame.DO_NOTHING_ON_CLOSE;
else 
    return JFrame.EXIT_ON_CLOSE;
}

answered May 03 '13 at 21:00

kBisla

590
2
8
23

Ask user if wants to quit via JOptionPane

4 Answers4

Linked