Exchanger关于交换情报的例子

package com.test;

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

public class ExchangerTest
{

	/**
	 * @param args
	 */
	public static void main(String[] args)
	{
		ExecutorService pool = Executors.newCachedThreadPool();
		final Exchanger changer = new Exchanger();
		pool.execute(new Runnable()
		{
			public void run()
			{
				String data1 = "情报1";
				System.out.println("线程:" + Thread.currentThread().getName()
						+ "准备把：" + data1+"交换出去");
				try
				{
					Thread.sleep(new Random().nextInt(10000));
					String data2 = (String)changer.exchange(data1);
					System.out.println("线程:" + Thread.currentThread().getName()
							+ "获得了：" + data2);
				}
				catch (Exception e)
				{
					e.printStackTrace();
				}
			}
		});
		
		pool.execute(new Runnable()
		{
			public void run()
			{
				String data1 = "情报2";
				System.out.println("线程:" + Thread.currentThread().getName()
						+ "准备把：" + data1+"交换出去");
				try
				{
					Thread.sleep(new Random().nextInt(10000));
					String data2 = (String)changer.exchange(data1);
					System.out.println("线程:" + Thread.currentThread().getName()
							+ "获得了：" + data2);
				}
				catch (Exception e)
				{
					e.printStackTrace();
				}
			}
		});
		
		pool.shutdown();
	}

}