ExecutorService接口的应用，创建线程池

主类：test.java

 

import java.io.IOException;

public class test {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try {
			NetworkService instance = new  NetworkService(100);
			instance.serve();//开始执行线程池
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	 
}

 

 

2、另外建的一个线程主程序

 

import java.io.IOException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

class NetworkService {
	    private final ExecutorService pool;
	    public NetworkService(int poolSize) throws IOException {
	      pool = Executors.newFixedThreadPool(poolSize);
	    }
	 
	    public void serve() {
	      for (int i =0;;i++) {
		  pool.execute(new Handler("开始执行一个任务:",i+1));
		}
	    }
	  }

class Handler implements Runnable {
  private final String taskcontent;
  private final int index;
  Handler(String taskcontent,int index) { 
	  this.index =  index;
	  this.taskcontent = taskcontent; }
  public void run() {
       System.out.println(taskcontent+index);
  }
}

 在for里面将任务全部放入到线程池里，最多只能容纳100个任务，然后执行的顺序会有所不同。