线程池

package com.test;

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

public class ThreadTest4
{

	/**
	 * @param args
	 */
	public static void main(String[] args)
	{
		ExecutorService pool = Executors.newCachedThreadPool();//newFixedThreadPool(2);
		for (int i = 0; i < 3; i++)
		{
			final int taskid = i;
			pool.execute(new Runnable(){
				public void run()
				{
					for (int i = 0; i < 10; i++)
					{
						try
						{
							Thread.sleep(new Random().nextInt(1000));
						}
						catch (InterruptedException e)
						{
							e.printStackTrace();
						}
						System.out.println("任务："+taskid+"中第"+i+"次");
					}
				}
			});
		}
		pool.shutdown();
	}

}