1 // Demo3.java的原始碼
 2 class MyThread extends Thread {
 3 
 4     private volatile boolean flag= true;
 5     public void stopTask() {
 6         flag = false;
 7     }
 8     
 9     public MyThread(String name) {
10         super(name);
11     }
12 
13     @Override
14     public void run() {
15         synchronized
 
(this) {
16             try {
17                 int i=0;
18                 while (flag) {
19                     Thread.sleep(100); // 休眠100ms
20                     i++;
21                     System.out.println(Thread.currentThread().getName()+" ("+this.getState()+") loop " + i);  
22                 }
 
23             } catch (InterruptedException ie) {  
24                 System.out.println(Thread.currentThread().getName() +" ("+this.getState()+") catch InterruptedException.");  
25             }
26         }  
27     }
28 }
29 
30 public class Demo3 {
31 
32     public static void main(String[] args) {  
 
33         try {  
34             MyThread t1 = new MyThread("t1");  // 新建“執行緒t1”
35             System.out.println(t1.getName() +" ("+t1.getState()+") is new.");  
36 
37             t1.start();                      // 啟動“執行緒t1”
38             System.out.println(t1.getName() +" ("+t1.getState()+") is started.");  
39 
40             // 主執行緒休眠300ms，然後主執行緒給t1發“中斷”指令。
41             Thread.sleep(300);
42             t1.stopTask();
43             System.out.println(t1.getName() +" ("+t1.getState()+") is interrupted.");
44 
45             // 主執行緒休眠300ms，然後檢視t1的狀態。
46             Thread.sleep(300);
47             System.out.println(t1.getName() +" ("+t1.getState()+") is interrupted now.");
48         } catch (InterruptedException e) {  
49             e.printStackTrace();
50         }
51     } 
52 }