CyclicBarrier的简单使用场景

package com.huang.add;

import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;

/**
 * CyclicBarrier模拟收集7颗龙珠
 *
 */
public class CyclicBarrierDemo {
    public static void main(String[] args) {
        CyclicBarrier cyclicBarrier = new CyclicBarrier(7,()->{
            System.out.println("召唤7个龙珠成功！");
        });

        for (int i = 1; i <= 7; i++) {
            final int temp = i;
            new Thread(()->{
                System.out.println(Thread.currentThread().getName()+"收集" + temp +"个龙珠");
                try {
                    cyclicBarrier.await();// 当到达7时，会唤醒回调函数
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } catch (BrokenBarrierException e) {
                    e.printStackTrace();
                }
            }).start();
        }
    }
}

运行结果