VolatileInc.java

package com.crossoverjie.concurrent;

import java.util.concurrent.atomic.AtomicInteger;

/**
 * Function:
 *
 * @author crossoverJie
 *         Date: 09/03/2018 00:34
 * @since JDK 1.8
 */
public class VolatileInc implements Runnable{

    private static volatile int count = 0 ; //使用 volatile 修饰基本数据内存不能保证原子性

    //private static AtomicInteger count = new AtomicInteger() ;

    @Override
    public void run() {
        for (int i=0;i<10000 ;i++){
            count ++ ;
            //count.incrementAndGet() ;
        }
    }

    public static void main(String[] args) throws InterruptedException {
        VolatileInc volatileInc = new VolatileInc() ;
        Thread t1 = new Thread(volatileInc,"t1") ;
        Thread t2 = new Thread(volatileInc,"t2") ;
        t1.start();
        //t1.join();

        t2.start();
        //t2.join();
        for (int i=0;i<10000 ;i++){
            count ++ ;
            //count.incrementAndGet();
        }


        System.out.println("最终Count="+count);
    }
}