Using Adapter Classes : Window Event « Swing Event « Java Tutorial

1. Java Tutorial
2. Swing Event
3. Window Event

An adapter class is a term for a class that implements a listener interface with methods that have no content (Ivor Horton's Beginning Java 2, JDK 5 Edition by Ivor Horton Wrox Press 2005)

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
public class Sketcher {
  JFrame window = new JFrame("Sketcher");
  public Sketcher() {
    window.setBounds(30, 30, 300, 300);
    window.addWindowListener(new WindowHandler());
    window.setVisible(true);
  }
  class WindowHandler extends WindowAdapter {
    public void windowClosing(WindowEvent e) {
      System.out.println("closing");
      window.dispose(); // Release the window resources
      System.exit(0); // End the application
    }
  }
  public static void main(String[] args) {
    new Sketcher();
  }
}

15.41.Window Event
	15.41.1.	The event IDs for the WindowEvent class
	15.41.2.	Making a Window Handle its Own Events
	15.41.3.	The WindowListener Interface: events reflecting changes in the state of a window
	15.41.4.	Using WindowListener
	15.41.5.	Using Adapter Classes
	15.41.6.	Listens for window iconify and deiconify events, so that it can stop the animation when the window isn't visible.
	15.41.7.	WindowListener, WindowFocusListener, WindowStateListener
	15.41.8.	extends WindowAdapter
	15.41.9.	Handle a window closing event
	15.41.10.	Setting the Initial Focused Component in a Window
	15.41.11.	int java.awt.event.WindowEvent.WINDOW_OPENED