ThreadGroup 类的简单示例

此例子用来演示 ThreadGroup 的一些作用

/**

02	* Simple demo of ThreadGroup usage.

03

*/

04	public class ThreadGroupDemo {

05

06	class MyThreadGroup extends ThreadGroup {

07	public void uncaughtException(Thread t, Throwable ex) {

08	System.err.println("I caught " + ex);

09

}

10	public MyThreadGroup(String name) {

11	super(name);

12

}

13

}

14

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

16	new ThreadGroupDemo().work();

17

}

18

19	protected void work() {

20	ThreadGroup g = new MyThreadGroup("bulk threads");

21	Runnable r = new Runnable() {

22	public void run() {

23	System.out.println(Thread.currentThread().getName() + " started");

24	for (int i=0; i<5; i++) {

25	System.out.println(Thread.currentThread().getName() + ": " + i);

26

try {

27	Thread.sleep(1776);

28	} catch (InterruptedException ex) {

29	System.out.println("Huh?");

30

}

31

}

32

}

33

};

34

35	// Create and start all the Threads

36	for (int i = 0; i< 10; i++) {

37	new Thread(g, r).start();

38

}

39

40	// List them.

41	Thread[] list = new Thread[g.activeCount()];

42	g.enumerate(list);

43	for (int i=0; i<list.length; i++) {

44	if (list[i] == null)

45

continue;

46	Thread t = list[i];

47	System.out.println(i + ": " + t);

48

}

49

}

50

}

51	//该片段来自于http://www.codesnippet.cn/detail/05122012834.html