Java线程--Exchanger使用

原创：转载需注明原创地址 https://www.cnblogs.com/fanerwei222/p/11868576.html

Java线程--Exchanger使用:

Exchanger 是用来交换2个线程之间的消息的, 超过2个线程则是随机发送消息, 不保证可靠性!

public static void main(String[] args) {
        /**
         * 两个线程间的数据交换
         */
        Exchanger exchanger = new Exchanger();

        ExecutorService service1 = Executors.newSingleThreadExecutor();
        service1.execute(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(3000);
                    System.out.println("子线程："+Thread.currentThread().getName()+"收到的消息是: " + exchanger.exchange("你好这里是线程1"));
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
        service1.shutdown();

        ExecutorService service2 = Executors.newSingleThreadExecutor();
        service2.execute(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(3000);
                    System.out.println("子线程："+Thread.currentThread().getName()+"收到的消息是: " + exchanger.exchange("你好这里是线程2"));
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
        service2.shutdown();
    }

打印:

子线程：pool-1-thread-1收到的消息是: 你好这里是线程2
子线程：pool-2-thread-1收到的消息是: 你好这里是线程1