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

 1 import java.awt.Button;

 2 import java.awt.Frame;

 3 import java.awt.event.ActionEvent;

 4 import java.awt.event.ActionListener;

 5 import java.awt.event.WindowEvent;

 6 import java.awt.event.WindowListener;

 7 

 8 public class TestFrame extends Frame {

 9     

10     public void launch(){

11         Button b = new Button("按钮");

12         b.addActionListener(new MyActionListener1());

13         b.addActionListener(new MyActionListener2());

14         this.add(b);

15         this.pack();

16         

17         this.addWindowListener(new WindowListener() {

18             

19             @Override

20             public void windowClosing(WindowEvent e) {

21                 System.out.println("windowClosing");

22                 System.exit(0);

23             }

24             

25             @Override

26             public void windowClosed(WindowEvent e) {

27                 System.out.println("windowClosed");

28             }

29 

30             @Override

31             public void windowOpened(WindowEvent e) {

32                 // TODO Auto-generated method stub

33                 

34             }

35 

36             @Override

37             public void windowIconified(WindowEvent e) {

38                 // TODO Auto-generated method stub

39                 

40             }

41 

42             @Override

43             public void windowDeiconified(WindowEvent e) {

44                 // TODO Auto-generated method stub

45                 

46             }

47 

48             @Override

49             public void windowActivated(WindowEvent e) {

50                 // TODO Auto-generated method stub

51                 

52             }

53 

54             @Override

55             public void windowDeactivated(WindowEvent e) {

56                 // TODO Auto-generated method stub

57                 

58             }

59             

60         });

61         

62         this.setVisible(true);

63     }

64      

65     private class MyActionListener1 implements ActionListener {

66 

67         @Override

68         public void actionPerformed(ActionEvent e) {

69             System.out.println("MyActionListener1");            

70         }

71         

72     }

73     

74     private class MyActionListener2 implements ActionListener {

75 

76         @Override

77         public void actionPerformed(ActionEvent e) {

78             System.out.println("MyActionListener2");            

79         }

80         

81     }

82     

83     

84     public static void main(String[] args) {

85         new TestFrame().launch();

86     }

87 }

 

2.运行结果