1 Exchanger使用案例

public class ExchangerDemo {

    public static void main(String[] args) {
        Exchanger<Object> exchanger = new Exchanger<>();

        new Thread(() -> {
            Object object = new Object();
            System.out.println(Thread.currentThread().getName() + "創(chuàng)建的對(duì)象是" + object);
            try {
                object = exchanger.exchange(object);
                System.out.println(Thread.currentThread().getName() + "交換后得到的對(duì)象是" + object);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }, "線程1").start();

        new Thread(() -> {
            Object object = new Object();
            System.out.println(Thread.currentThread().getName() + "創(chuàng)建的對(duì)象是" + object);
            try {
                TimeUnit.SECONDS.sleep(2);
                object = exchanger.exchange(object);
                System.out.println(Thread.currentThread().getName() + "交換后得到的對(duì)象是" + object);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }, "線程2").start();
    }

}

結(jié)果

線程1創(chuàng)建的對(duì)象是java.lang.Object@2f992f4f
線程2創(chuàng)建的對(duì)象是java.lang.Object@42c40a13
線程2交換后得到的對(duì)象是java.lang.Object@2f992f4f
線程1交換后得到的對(duì)象是java.lang.Object@42c40a13