同步队列

SynchronousQueue

同步队列即队列容量为1的队列，只能放进一个元素，取出后才能放入另一个

package com.example.juc;

import java.util.concurrent.BlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.TimeUnit;

public class TestSynchronousQueue {
    public static void main(String[] args) {
        BlockingQueue<String> queue = new SynchronousQueue<>();
        new Thread(() -> {
            try {
                System.out.println(Thread.currentThread().getName() + " put 1");
                queue.put("1");
                System.out.println(Thread.currentThread().getName() + " put 2");
                queue.put("2");
                System.out.println(Thread.currentThread().getName() + " put 3");
                queue.put("3");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }, "T1").start();
        new Thread(() -> {
            try {
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName() + "->" + queue.take());
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName() + "->" + queue.take());
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName() + "->" + queue.take());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }, "T2").start();
    }
}

T1put 1
T2->1
T1put 2
T2->2
T1put 3
T2->3