anothertest.java

我在学习JAVA的讲义

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


public class AnotherTest extends Frame implements ActionListener{
	static int i=0;
	
    public static void main(String args[ ]){
	AnotherTest f = new AnotherTest("Another Test");
	Button b = new Button("pop up a frame");
//	b.addActionListener(new AnotherTest());
	b.addActionListener(f);
	f.setSize(400,400);
	f.add(b);
	f.addWindowListener(new WindowAdapter(){
		public void windowClosing(WindowEvent e){
			System.exit(0);
		}
	});
	f.pack( );
	f.setVisible(true) ;
	}
	
	public AnotherTest(String str){
		super(str);
		}
	
	public void actionPerformed(ActionEvent e){
		Frame fr=new Frame("new Frame No"+(++i));
		fr.setSize(200,200);
		fr.setBackground(Color.yellow);
		fr.setVisible(true);
		}
 }