How to programmatically close a JFrame

Question

What\'s the correct way to get a JFrame to close, the same as if the user had hit the X close button, or pressed Alt+F4 (on W

Answer 1

If you really do not want your application to terminate when a JFrame is closed then,

use : setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

instead of : setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Here's a synopsis of what the solution looks like,

 myFrame.dispatchEvent(new WindowEvent(myFrame, WindowEvent.WINDOW_CLOSING));

Answer 2

This answer was given by Alex and I would like to recommend it. It worked for me and another thing it's straightforward and so simple.

setVisible(false); //you can't see me!
dispose(); //Destroy the JFrame object

Answer 3

I have tried this, write your own code for formWindowClosing() event.

 private void formWindowClosing(java.awt.event.WindowEvent evt) {                                   
    int selectedOption = JOptionPane.showConfirmDialog(null,
            "Do you want to exit?",
            "FrameToClose",
            JOptionPane.YES_NO_OPTION);
    if (selectedOption == JOptionPane.YES_OPTION) {
        setVisible(false);
        dispose();
    } else {
        setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE);
    }
}    

This asks user whether he want to exit the Frame or Application.

Answer 4

Based on the answers already provided here, this is the way I implemented it:

JFrame frame= new JFrame()
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// frame stuffs here ...

frame.dispatchEvent(new WindowEvent(frame, WindowEvent.WINDOW_CLOSING));

The JFrame gets the event to close and upon closing, exits.

Answer 5

Here would be your options:

System.exit(0); // stop program
frame.dispose(); // close window
frame.setVisible(false); // hide window

Answer 6

Not only to close the JFrame but also to trigger WindowListener events, try this:

myFrame.dispatchEvent(new WindowEvent(myFrame, WindowEvent.WINDOW_CLOSING));