JFrame Conditional Close

[hemanthjava]

I want the JFrame to be closed conditionally, based on a yes, no or cancel dialog.

I am not able to control it for "Cancel" and "No" button.s. Every time the JFrame Closes.

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JOptionPane;

// Displaying a JFrame at the center of the screen using Java Toolkit Class
public class jFrameDemo extends JFrame {

	jFrameDemo() {
		setTitle("Center a Frame on Screen"); // jframe title
		setSize(400, 300); // jframe size
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		addWindowListener(new WindowAdapter() {

			// java jframe close
			public void windowClosing(WindowEvent e) {
				if (JOptionPane.showConfirmDialog(null, "Are you sure ?") == JOptionPane.YES_NO_OPTION) {
					setVisible(false);
					dispose(); // jframe exit
				} else {
				}
			}
		});
	}

	public static void main(String[] args) {
		jFrameDemo cfd = new jFrameDemo();
		cfd.setVisible(true);
	}

}

[Eranga]

You have to use YES_OPTION only. Got it?

[hardwired]

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class FrameDemoRx extends JFrame {
    FrameDemoRx() {
        setSize(200, 200);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                int n = 99;
                do {
                    n = JOptionPane.showConfirmDialog(null,
                                                "Are you sure ?");
                    String s = "unknown";
                    if(n == JOptionPane.YES_OPTION)
                        s = "YES_OPTION = " + JOptionPane.YES_OPTION;
                    if(n == JOptionPane.NO_OPTION)
                        s = "NO_OPTION = " + JOptionPane.NO_OPTION;
                    if(n == JOptionPane.CANCEL_OPTION)
                        s = "CANCEL_OPTION = " + JOptionPane.CANCEL_OPTION;
                    if(n == JOptionPane.CLOSED_OPTION)
                        s = "CLOSED_OPTION = " + JOptionPane.CLOSED_OPTION;
                    System.out.println("s = " + s);
                } while(n != -1);
            }
        });
        setLocationRelativeTo(null);
        setVisible(true);
    }

    public static void main(String[] args) {
        new FrameDemoRx();
    }
}

[hemanthjava]

I changed to the YES_OPTION only. But I still experience the same probelm

[Eranga]

Oops, you have another mistake too. You have set the default close operation to exit. So what happened is, what ever the option you selected at the time frame has a process to complete. So change the default close operation to DO_NOTHING_ON_CLOSE. It should work.

[hemanthjava]

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class FrameDemoRx extends JFrame {
    FrameDemoRx() {
        setSize(200, 200);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                int n = 99;
                do {
                    n = JOptionPane.showConfirmDialog(null,
                                                "Are you sure ?");
                    String s = "unknown";
                    if(n == JOptionPane.YES_OPTION)
                        s = "YES_OPTION = " + JOptionPane.YES_OPTION;
                    if(n == JOptionPane.NO_OPTION)
                        s = "NO_OPTION = " + JOptionPane.NO_OPTION;
                    if(n == JOptionPane.CANCEL_OPTION)
                        s = "CANCEL_OPTION = " + JOptionPane.CANCEL_OPTION;
                    if(n == JOptionPane.CLOSED_OPTION)
                        s = "CLOSED_OPTION = " + JOptionPane.CLOSED_OPTION;
                    System.out.println("s = " + s);
                } while(n != -1);
            }
        });
        setLocationRelativeTo(null);
        setVisible(true);
    }

    public static void main(String[] args) {
        new FrameDemoRx();
    }
}

This snippet does not solve the purpose of Closing the JFrame conditionally. Can you please help in this regard ?

[Eranga]

You have done the same error too here.

setDefaultCloseOperation(EXIT_ON_CLOSE);

[hemanthjava]

Oops, you have another mistake too. You have set the default close operation to exit. So what happened is, what ever the option you selected at the time frame has a process to complete. So change the default close operation to DO_NOTHING_ON_CLOSE. It should work.

You have done the same error too here.

setDefaultCloseOperation(EXIT_ON_CLOSE);

Thank you so much. It worked for me. :-)

[Eranga]

Nice to hear that.

[Fubarable]

cross-posted. thanks for wasting my time.

[Eranga]

Don't worry Fubarable. Some people doesn't believe what we says at once.

Anyway, you are on the suns' forum too, isn't it?