Java-马士兵设计模式学习笔记-观察者模式-AWT简单例子

1.AWT简单例子

TestFrame.java

 import java.awt.Button;
 import java.awt.Frame;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.WindowEvent;
 import java.awt.event.WindowListener;

 public class TestFrame extends Frame {

     public void launch(){
         Button b = new Button("按钮");
         b.addActionListener(new MyActionListener1());
         b.addActionListener(new MyActionListener2());
         this.add(b);
         this.pack();

         this.addWindowListener(new WindowListener() {

             @Override
             public void windowClosing(WindowEvent e) {
                 System.out.println("windowClosing");
                 System.exit(0);
             }

             @Override
             public void windowClosed(WindowEvent e) {
                 System.out.println("windowClosed");
             }

             @Override
             public void windowOpened(WindowEvent e) {
                 // TODO Auto-generated method stub

             }

             @Override
             public void windowIconified(WindowEvent e) {
                 // TODO Auto-generated method stub

             }

             @Override
             public void windowDeiconified(WindowEvent e) {
                 // TODO Auto-generated method stub

             }

             @Override
             public void windowActivated(WindowEvent e) {
                 // TODO Auto-generated method stub

             }

             @Override
             public void windowDeactivated(WindowEvent e) {
                 // TODO Auto-generated method stub

             }

         });

         this.setVisible(true);
     }

     private class MyActionListener1 implements ActionListener {

         @Override
         public void actionPerformed(ActionEvent e) {
             System.out.println("MyActionListener1");
         }

     }

     private class MyActionListener2 implements ActionListener {

         @Override
         public void actionPerformed(ActionEvent e) {
             System.out.println("MyActionListener2");
         }

     }

     public static void main(String[] args) {
         new TestFrame().launch();
     }
 }

2.运行结果