Java中JDialog的舉例

This program demonstrates the creation of a JDialog from a super-window. The created dialog is on the mode "Modal".

[java]

1. package com.han;  
2.   
3. import java.awt.*;  
4. import java.awt.event.ActionEvent;  
5. import java.awt.event.ActionListener;  
6.   
7. import javax.swing.*;  
8.   
9. /** 
10.  * This program demonstrates the creation of a JDialog from a super-window. 
11.  * The created dialog is on the mode "Modal". 
12.  * @author han 
13.  * 
14.  */  
15. public class SwingJDialog {  
16.     public SwingJDialog(){  
17.         final JFrame jf=new JFrame("彈出窗體實驗");  
18.         // Some methods defined by Toolkit query the native operating system directly.   
19.         Dimension screensize=Toolkit.getDefaultToolkit().getScreenSize();   
20.         int Swing1x=500;  
21.         int Swing1y=300;  
22.         jf.setBounds(screensize.width/2-Swing1x/2,screensize.height/2-Swing1y/2,Swing1x,Swing1y);  
23.         jf.setVisible(true);  
24.         jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
25.         Container c=jf.getContentPane();  
26.         c.setBackground(Color.pink);  
27.         c.setLayout(null);  
28.   
29.         Dimension Swing1size=jf.getSize();  
30.         JButton jb=new JButton("彈出對話窗");  
31.         int jbx=100;  
32.         int jby=30;  
33.         jb.setBounds(Swing1size.width/2-jbx/2,Swing1size.height/2-jby/2,jbx,jby);  
34.         //jb.setBounds(Swing1x/2-jbx/2,Swing1y/2-jby/2,jbx,jby);   
35.         c.add(jb);  
36.   
37.         class Dialog1 {  
38.             JDialog jd=new JDialog(jf,"JDialog窗體",true);  
39.             Dialog1(){  
40.   
41.                 jd.setSize(300,200);  
42.                 Container c2=jd.getContentPane();  
43.                 c2.setLayout(null);  
44.                 JLabel jl=new JLabel("只是一個對話框");  
45.                 jl.setBounds(0,-20,100,100);  
46.                 JButton jbb=new JButton("確定");  
47.                 jbb.setBounds(100,100,60,30);  
48.                 c2.add(jl);  
49.                 c2.add(jbb);  
50.                 jbb.addActionListener(new ActionListener(){  
51.                     @Override  
52.                     public void actionPerformed(ActionEvent e) {  
53.                         jd.dispose();  
54.                         //System.exit(0);   
55.                     }  
56.   
57.                 });  
58.                 System.out.println("OK");  
59.   
60.                 jd.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);  
61.   
62.             }  
63.         }  
64.   
65.         jb.addActionListener(new ActionListener(){  
66.             public void actionPerformed(ActionEvent e){  
67.                 new Dialog1().jd.setVisible(true);//彈出對話框   
68.                 System.out.println("OK2");  
69.             }  
70.         });  
71.         System.out.println("OK3");  
72.     }  
73.   
74.     public static void main(String[] args){  
75.         new SwingJDialog();  
76.     }  
77. }