windoweventtest4.java

JAVA SE6 全方位学习 朱仲杰 编著 机械工业出版社出版

import java.awt.*;
import java.awt.event.*;

public class WindowEventTest4
{
	public static void main(String argv[])
	{
		Frame f1 = new Frame("Main");
		f1.addWindowListener(new WindowEventHandler());
		f1.setSize(200,200);

		Frame f2 = new Frame("Another");
                f2.addWindowListener(new WindowEventHandler());
                f2.setSize(300,100);
 
		f1.setVisible(true);
		f2.setVisible(true);
	}
}

class WindowEventHandler extends WindowAdapter
{
	public void windowActivated(WindowEvent e)
	{
		Frame f = (Frame)e.getSource();
		System.out.println(f.getTitle()+" activited.");
	}

	public void windowClosing(WindowEvent e)
	{
		System.exit(0);
	}
}