7 Java多线程：JUC（上）( 二 ) _生活百科

CyclicBarrier执行后的效果是：

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四、Exchanger
Exchanger的功能如果用图来表示的话，就会是这样的：
【7 Java多线程：JUC（上）】

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Exchanger实例代码：
/** * 交换机 * * @author 湘王 */public class ExchangerTester implements Runnable {Exchanger<Object> exchanger = null;Object object = null;public ExchangerTester(Exchanger<Object> exchanger, Object object) {this.exchanger = exchanger;this.object = object;}@Overridepublic void run() {try {Object previous = this.object;this.object = this.exchanger.exchange(this.object);System.out.println(Thread.currentThread().getName() + " 用对象 " + previous + " 换对象 " + this.object);} catch (InterruptedException e) {e.printStackTrace();}}public static void main(String[] args) {Exchanger<Object> exchanger = new Exchanger<Object>();ExchangerTester tester1 = new ExchangerTester(exchanger, "A");ExchangerTester tester2 = new ExchangerTester(exchanger, "B");new Thread(tester1).start();new Thread(tester2).start();}}Exchanger执行后的效果是：