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Categories / Java Tutorial / Swing

 

Determining When a Frame or Window Is Opened or Closed

import java.awt.Frame; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; public class Main {   public static void main() {     Frame frame = new Frame();     WindowListener listener = new WindowAdapter() {       public void windowOpened(WindowEvent evt) {         Frame frame = (Frame) evt.getSource();         System.out.println(frame.getTitle());       }       public void windowClosing(WindowEvent evt) {         Frame frame = (Frame) evt.getSource();         System.out.println(frame.getTitle());       }       public void windowClosed(WindowEvent evt) {         Frame frame = (Frame) evt.getSource();         System.out.println(frame.getTitle());       }     };     frame.addWindowListener(listener);     frame.setVisible(true);   } }