/** * * @描述: 同步工具 * 表示大家彼此等待,大家集合好后才开始出发,分散活动后又在指点地点集合碰合 . * @作者: Wnj . * @创建时间: 2017年5月16日 . * @版本: 1.0 . */ public class CyclicBarrierTest { public static void main(String[] args) { ExecutorService service = Executors.newCachedThreadPool(); //要有三个线程到了才走 final CyclicBarrier cb = new CyclicBarrier(3); for (int i = 0; i < 3; i++) { Runnable runnable = new Runnable() { public void run() { try { Thread.sleep((long)(Math.random() * 10000)); System.out.println("线程" + Thread.currentThread().getName() + "即将到达集合地点1,当前已有" + (cb.getNumberWaiting() + 1) + "个已经到达," + (cb.getNumberWaiting() == 2 ? "都到齐了,继续走啊" : "正在等候")); //三个线程的第N个线程等待 cb.await(); Thread.sleep((long)(Math.random() * 10000)); System.out.println("线程" + Thread.currentThread().getName() + "即将到达集合地点2,当前已有" + (cb.getNumberWaiting() + 1) + "个已经到达," + (cb.getNumberWaiting() == 2 ? "都到齐了,继续走啊" : "正在等候")); //三个线程的第N个线程等待 cb.await(); Thread.sleep((long)(Math.random() * 10000)); System.out.println("线程" + Thread.currentThread().getName() + "即将到达集合地点3,当前已有" + (cb.getNumberWaiting() + 1) + "个已经到达," + (cb.getNumberWaiting() == 2 ? "都到齐了,继续走啊" : "正在等候")); //三个线程的第N个线程等待 cb.await(); } catch (Exception e) { e.printStackTrace(); } } }; service.execute(runnable); } service.shutdown(); } }
时间: 2024-10-23 22:45:02