Exchanger：线程交换数据

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

public class ExchangerTest {

	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 = "白粉";
					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 = "金钱";
					System.out.println("线程" + Thread.currentThread().getName() + "正在把" + data1 +"换出去");
					Thread.sleep((long)(Math.random()*10000));					
					String data2 = (String)exchanger.exchange(data1);
					System.out.println("线程" + Thread.currentThread().getName() + "换回的东西为" + data2);
				}catch(Exception e){
					
				}				
			}	
		});		
	}
}

运行结果

线程pool-1-thread-1正在把数据白粉换出去
线程pool-1-thread-2正在把金钱换出去
线程pool-1-thread-2换回的东西为白粉
线程pool-1-thread-1换回的数据为金钱