java中 ExecutorService,Executor,ThreadPoolExecutor的用法

package com;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;  
import java.util.concurrent.Executors;  
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

public class demo3 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        
         //test1();
         //test2();
         test3();
    }
    
    
    static void test1(){
        //ExecutorService的用法
         ExecutorService fixedThreadPool = Executors.newFixedThreadPool(2);  
          for( int i=0;i<100;i++){
          fixedThreadPool.execute(
                 new Runnable(){
                     
                     public void run() {    
System.out.println("====threadId="+Thread.currentThread().getId());
                         
                     }
                 }
                  );
          }
        
    
    }
    
    
    static void test2(){
          Executor exec=new ThreadPerTaskExecutor();
          exec.execute(new Runnable(){

            @Override
            public void run() {
                // TODO Auto-generated method stub
                System.out.println("ccccc"+Thread.currentThread().getId());
            }
              
              
          });
          
      }
    
    
    //ThreadPoolExecutor
    static void test3(){
        
        BlockingQueue<Runnable> queue = new LinkedBlockingQueue<Runnable>();
          ThreadPoolExecutor threadPool = new ThreadPoolExecutor(2, 4, 5, TimeUnit.SECONDS,
                    queue, new ThreadPoolExecutor.AbortPolicy());
          
          for(int i=0;i<100;i++){
          threadPool.execute(new MyThread(i+""));
          }
          threadPool.shutdown();
          
    }
    
    
      static class MyThread implements Runnable {
            private String name;

            public MyThread(String name) {
                this.name = name;
            }

            @Override
            public void run() {
                // 做点事情
                try {
                    Thread.sleep(1000);
                        
                    System.out.println(name+"===当前线程="+Thread.currentThread().getId() + " finished job!") ;
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    


}



//execute的用法
     class ThreadPerTaskExecutor implements Executor {
         public void execute(Runnable r) {
             new Thread(r).start();
         }
     }

 

posted @ 2017-07-10 15:56  甜菜波波  阅读(964)  评论(0编辑  收藏  举报