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本帖最后由 方兆国 于 2013-01-13 15:15 编辑
- public class JoinThread extends Thread {
- public static int n = 0;
- static synchronized void inc() {
- n++;
- }
- public void run() {
- for (int i = 0; i < 10; i++) {
- try {
- inc();
- System.out.println(n);
- sleep(3); // 为了使运行结果更随机,延迟3毫秒
- } catch (Exception e) {
- }
- }
- }
- public static void main(String[] args) throws Exception {
- Thread threads[] = new Thread[100];
- for (int i = 0; i < threads.length; i++) // 建立100个线程
- {
- threads[i] = new JoinThread();
- }
- for (int i = 0; i < threads.length; i++) // 运行刚才建立的100个线程
- {
- threads[i].start();
- }
- // if (args.length > 0) {
- for (int i = 0; i < threads.length; i++) // 100个线程都执行完后继续
- {
- threads[i].join(); //必须这个线程执行完,当前线程才能继续执行
- }
- // }
- System.out.println(“n=” + JoinThread.n);
- }
- }
复制代码 我做个好人吧,给你弄好看点儿 |
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