简单安全高效的Java计数器

本文利用AtomicLong实现了一个安全高效的计数器，利用线程池技术，测试结果符合预期，避免了线程并发操作变量问题，避免使用同步锁提高了效率。

package com.springapp.mvc;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;import java.util.concurrent.atomic.AtomicLong;/** * Created by acer on 2017/5/27. */public class TestAtomic {    //AtomicLong 的api参考 http://www.tuicool.com/articles/uY3qIbB    public static final AtomicLong atomicLong = new AtomicLong(0L);    public static void main(String[] args) {        ExecutorService executorService = Executors.newFixedThreadPool(10);        MyThread myThread = null;        for(int i = 0;i<100;i++){            myThread = new MyThread(atomicLong);            //ExecutorService的api中文解释【启动一次顺序关闭，执行以前提交的任务，但不接受新任务】 http://tool.oschina.net/apidocs/apidoc?api=jdk-zh            executorService.submit(myThread);        }        executorService.shutdown();        System.out.println(atomicLong.get());    }}class MyThread extends Thread {    private AtomicLong atomicLong;    public MyThread(AtomicLong atomicLong){        this.atomicLong = atomicLong;    }    @Override    public void run() {        System.out.println(Thread.currentThread().getName() + "正在执行。。。");        System.out.println(atomicLong.incrementAndGet());    }}