java swing 窗口不用时定时关闭

我写了一些Java swing客户端程序,我想达到一个效果:长时间不用时自动关闭.

如何实现呢?

启动主窗口时,调用如下方法,给Frame添加监听事件:

Java代码  

1. private void init33() {  
2.         this.addWindowListener(new WindowAdapter() {  
3.   
4.             @Override  
5.             public void windowActivated(WindowEvent e) {  
6.                 System.out.println("window Activated");  
7.                 if (task != null) {  
8.                     task.cancel();  
9.                     task = null;  
10.                 }  
11.                 super.windowActivated(e);  
12.             }  
13.   
14.             @Override  
15.             public void windowDeactivated(WindowEvent e) {  
16.                 System.out.println("window Deactivated");  
17.                 if (isLocked) {// over three times and is still locked,meanwhile use  
18.                     // try to log in  
19.                     if (task != null) {  
20.                         task.cancel();  
21.                         task = null;  
22.                     }  
23.                 } else {// first into this if clause(if (timesFail >=  
24.                         // LoginUtil.MAX_LOGIN_FAIL_TIMES ))  
25.                     task = null;  
26.                 }  
27.                 if (timer == null) {  
28.                     timer = new Timer();  
29.                 }  
30.               
31.                 if (task == null) {  
32.                     task = new MyTask(QRCodeApp.this);  
33.                 }  
34.                 timer.schedule(task, Constant.MILLISECONDS_WAIT_WHEN_FAIL);  
35.                 System.out.println("开始计时");  
36.                 isLocked = true;  
37.                 super.windowDeactivated(e);  
38.             }  
39.   
40.             @Override  
41.             public void windowGainedFocus(WindowEvent e) {  
42.                 System.out.println("window GainedFocus");  
43.                 super.windowGainedFocus(e);  
44.             }  
45.   
46.             @Override  
47.             public void windowLostFocus(WindowEvent e) {  
48.                 System.out.println("window LostFocus");  
49.                 super.windowLostFocus(e);  
50.             }  
51.               
52.         });  
53.     }  

 MyTask 源码:

Java代码  

1. package com.qr.yj.common;  
2.   
3. import com.qr.yj.QRCodeApp;  
4.   
5. public class MyTask extends java.util.TimerTask{  
6.     private QRCodeApp frame;  
7.       
8.     public MyTask(QRCodeApp frame) {  
9.         super();  
10.         this.frame=frame;  
11.     }  
12.   
13.     @Override  
14.     public void run() {  
15.         frame.setLocked(false);  
16.         System.out.println("$$$$$");  
17.         frame.dispose();  
18.         System.exit(0);  
19.     }  
20. }  

 说明:

(1)Constant.MILLISECONDS_WAIT_WHEN_FAIL 的值600000 ,int类型,单位是:毫秒,即600秒.

(2)QRCodeApp 继承了JFrame,有如下成员变量:

Java代码  

1. private Timer timer = new Timer();  
2.     private MyTask task = null;  
3.     private boolean isLocked = false;  

 后台日志:

window Activated

window Deactivated

开始计时

window Activated

window Deactivated

开始计时

$$$$$

程序源代码见附件:qrcode_swing.zip

依赖的jar包:io0007-find_progess-0.0.8.4-SNAPSHOT.jar,

注意:程序采用maven 构建