How to capture a JFrame s close button click event

Question

I want to call a method confirmExit   when the red close button of the title bar of a JFrame is clicked   How can I capture that event   I d also like to prevent the window from closing if the user chooses not to proceed

User · Answer

This is what I put as a menu option where I made a button on a JFrame to display another JFrame. I wanted only the new frame to be visible, and not to destroy the one behind it. I initially hid the first JFrame, while the new one became visible. Upon closing of the new JFrame, I disposed of it followed by an action of making the old one visible again.

Note: The following code expands off of Ravinda's answer and ng is a JButton:

ng.addActionListener((ActionEvent e) -> {
    setVisible(false);
    JFrame j = new JFrame("NAME");
    j.setVisible(true);
    j.addWindowListener(new java.awt.event.WindowAdapter() {
        @Override
        public void windowClosing(java.awt.event.WindowEvent windowEvent) {
            setVisible(true);
        }
    });
});

User · Answer

import javax swing JOptionPane  import javax swing JFrame     Some piece of code   frame addWindowListener new java awt event WindowAdapter          Override     public void windowClosing java awt event WindowEvent windowEvent            if  JOptionPane showConfirmDialog frame                Are you sure you want to close this window     Close Window                 JOptionPane YES NO OPTION              JOptionPane QUESTION MESSAGE     JOptionPane YES OPTION               System exit 0                         If you also want to prevent the window from closing unless the user chooses  Yes   you can add   frame setDefaultCloseOperation JFrame DO NOTHING ON CLOSE

User · Answer

Override windowClosing Method   public void windowClosing WindowEvent e    It is invoked when a window is in the process of being closed  The close operation can be overridden at this point

User · Answer

Try this   setDefaultCloseOperation DO NOTHING ON CLOSE     It will work

User · Answer

frame setDefaultCloseOperation JFrame EXIT ON CLOSE     also works  First create a JFrame called frame  then add this code underneath

User · Answer

This may work   jdialog addWindowListener new WindowAdapter         public void windowClosed WindowEvent e            System out println  jdialog window closed event received               public void windowClosing WindowEvent e            System out println  jdialog window closing event received                Source  https   alvinalexander com java jdialog-close-closing-event

[java] How to capture a JFrame's close button click event?

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