Executors.newFixedThreadPool实例

在线程池中，有一个是专门定义单线程的线程池，是Executors.newFixedThreadPool。为什么要单独定义一个池，这个池有什么特别的地方呢？
1.主要是这个线程池可以在挂掉或者出异常的情况下，重新启动一个线程来执行接下去的任务。这个对开发人员就比较方便了。

/**
 * <br>
 * do what you want to do and never stop it.
 * <br>
 */
package com.luch.thread;

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

/**
 * @author Jack
 * Jul 13, 2014
 * <br>
 */
public class SingleThreadExecutorDemo implements Runnable{

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		SingleThreadExecutorDemo demo = new SingleThreadExecutorDemo();
		ExecutorService  exec =  Executors.newSingleThreadExecutor();
		exec.execute(demo);

	}

	public void run() {
		int temp = 0;
		int i = 0;
		while(true){
			int j = new Random().nextInt(100);
			System.out.println("temp="+ temp + ",j=" + j + ",i=" + i++ );
			try {
				if(temp==0 && j > 90){
					temp = j/0;
				}
				Thread.sleep(100);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
				temp = 0;
			}
			
		}
		
	}

}