JDK1.5 Exchange 两个线程互换数据

最新推荐文章于 2025-04-27 09:38:25 发布

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本文通过示例代码展示了如何利用Java中的Exchanger类实现两个或多个线程之间的数据交换。示例中创建了三个线程，并使用Exchanger进行数据交换，每个线程将自身数据与其他线程进行交换并输出结果。



import java.util.concurrent.Exchanger;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * Exchange 2个线程之间交换数据 
 */
public class ExchangeTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ExecutorService service=Executors.newCachedThreadPool();
		final Exchanger exchanger=new Exchanger();
		service.execute(new Runnable(){
			@Override
			public void run() {
				try {
					String data1="zxx";
					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) {
					// TODO: handle exception
				}
			}

		});


		service.execute(new Runnable(){
			@Override
			public void run() {
				try {
					String data1="lhm";
					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) {
					// TODO: handle exception
				}

			}

		});

		service.execute(new Runnable(){
			@Override
			public void run() {
				try {
					String data1="happy";
					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) {
					// TODO: handle exception
				}

			}

		});

	}
}