Ganesh V Ganesh V - 1 year ago 89
Java Question

How to make my JOptionPane dialogue box disappear after 10 seconds

I have a method in Java to catch exception and show in a dialogue box . I would like to make the dialogue box only for 10 seconds and should disappear after that . My code is below

private void errorpopup(Exception m)
new JLabel("<html><body><p style='width: 300px;'>"+m.toString()+"</p></body></html>", JOptionPane.ERROR_MESSAGE));


Please provide your valuable suggestions and thanks in advance.

Answer Source

SwingUtilities.getWindowAncestor(component) is a method that returns the first ancestor window of the component.

You can use this in conjunction with your JLabel (as the component) to get a reference to the JOptionPane Message Dialog Window which you could then close within a timer method set to 10 seconds; something like so:

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import javax.swing.Timer;

public class TestClass {

    public static void main(String[] args)
        errorpopup(new Exception("Error"));

    private static void errorpopup(Exception m)
        JLabel messageLabel = new JLabel("<html><body><p style='width: 300px;'>"+m.toString()+"</p></body></html>");
        Timer timer = new Timer(10000, 
            new ActionListener()
                public void actionPerformed(ActionEvent event)
        JOptionPane.showMessageDialog(null, messageLabel, "Error Window Title", JOptionPane.ERROR_MESSAGE);

Alternatively, this link has another example of how it could be done: How to close message dialog programmatically?

You would need to do a little bit of work to make it fit your purpose but it shows how you could display the countdown to the user which is neat.

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