Java5 多线程(七)--Exchanger同步工具类

用于实现两个人之间的数据交换,每一个人在完成一定的事务后想与对方交换交换数据,第一个先拿出数据的人将一直等待第二个人拿着数据到来时,才能彼此交换数据.也就是当两个线程都到达了交换点.才能交换.

public static void main(String[] args) {

ExecutorService service = Executors.newCachedThreadPool();

final Exchanger exchanger = new Exchanger();

service.execute(new Runnable() {

public void run() {

try {

String data1 = "money";

System.out.println("线程" + Thread.currentThread().getName()

+ "正在把数据" + data1 + "换出去");

Thread.sleep((long) (Math.random() * 10000));

String data2 = (String) exchanger.exchange(data1);

System.out.println("线程" + Thread.currentThread().getName()

+ "换回的数据为" + data2);

} catch (Exception e) {

}

}

});

service.execute(new Runnable() {

public void run() {

try {

String data1 = "drugs";

System.out.println("线程" + Thread.currentThread().getName()

+ "正在把数据" + data1 + "换出去");

Thread.sleep((long) (Math.random() * 10000));

String data2 = (String) exchanger.exchange(data1);

System.out.println("线程" + Thread.currentThread().getName()

+ "换回的数据为" + data2);

} catch (Exception e) {

}

}

});

}

运行的结果如下所示:

转载请注明出处:http://blog.youkuaiyun.com/johnny901114/article/details/8696019