dialogdemo.txt

来自「JAVA的一些基础教程」· 文本 代码 · 共 68 行

1: import java.awt.*; 
2: import java.awt.event.*; 
3: 
4: public class DialogDemo extends Frame 
5:               implements ActionListener 
6: { 
7:    Button btnExit; 
8:    Button btnYes; 
9:    Button btnNo; 
10:    Dialog dlgConfirm; 
11: 
12:    public DialogDemo() 
13:    { 
14:       btnExit = new Button("退出"); 
15:       btnExit.addActionListener(this); 
16: 
17:       add(btnExit); 
18:       setLayout(new FlowLayout()); 
19: 
20:       dlgConfirm = new Dialog(this); 
21:       dlgConfirm.setResizable(false); 
22: 
23:       btnYes = new Button("是"); 
24:       btnYes.addActionListener(this); 
25: 
26:       btnNo = new Button("否"); 
27:       btnNo.addActionListener(this); 
28: 
29:       dlgConfirm.add(btnYes); 
30:       dlgConfirm.add(btnNo); 
31:       dlgConfirm.setTitle("确定退出?"); 
32: 
33:       dlgConfirm.setSize(200, 100); 
34:       dlgConfirm.setLayout(new FlowLayout());  
35: 
36:       addWindowListener(new WinCloser()); 
37:       setTitle("Using a Dialog"); 
38:       setBounds( 100, 100, 300, 300); 
39:       setVisible(true); 
40: 
41:    } 
42: 
43: 
44:    public void actionPerformed(ActionEvent ae) 
45:    { 
46:       if (ae.getActionCommand().equals("退出")) 
47:         dlgConfirm.show(); 
48:       if (ae.getActionCommand().equals("是")) 
49:          System.exit(0); 
50:       if (ae.getActionCommand().equals("否")) 
51:          dlgConfirm.setVisible(false); 
52:    } 
53: 
54:    public static void main(String[] args) 
55:    { 
56:       DialogDemo td = new DialogDemo(); 
57:    } 
58: 
59: } 
60: 
61: class WinCloser extends WindowAdapter 
62: { 
63:    public void windowClosing(WindowEvent e) 
64:    { 
65:       System.exit(0); 
66:    } 
67: }