package JavaDay6_02;

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

/**
 * @author [email protected]
 * @date 18-6-2  上午10:33
 */

public class Demo4 {
    public static class Writer extends Thread {
        private final CyclicBarrier cyclicBarrier;

        public Writer(CyclicBarrier cyclicBarrier) {
            this.cyclicBarrier = cyclicBarrier;
        }

        @Override
        public void run() {
            try{
                Thread.sleep(1000);
                System.out.println("執行緒" + this.getName() + "寫入資料完畢，等待其他執行緒寫入...");
                cyclicBarrier.await();
                System.out.println("執行緒" + this.getName() + "關閉");
            } catch (InterruptedException e) {
                e.printStackTrace();
            } catch (BrokenBarrierException e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) throws BrokenBarrierException, InterruptedException {
        CyclicBarrier cyclicBarrier = new CyclicBarrier(5);

        for(int i = 0; i < 4 ; i++) {
            new Writer(cyclicBarrier).start();
        }

        cyclicBarrier.await();
        Thread.sleep(1000);
        System.out.println("所有執行緒寫入資料完畢...");
    }
}
 

    執行結果為：