Thread多線程進行不加鎖控制執行順序適用volatile關鍵字，不能保證執行結果的原子性，本地加載的無序發生爭搶導致

package com.tl.executor.locks; 

public class Sync02 implements  Runnable{
   static volatile int i=0;
    @Override
    public void run() {
        for (int j=0;j<100000;j++){
            add();
            System.out.println(Thread.currentThread().getName()+"||||||||"+i);
        }
    }

    public static    void add(){
        i++;
    }

    public static void main(String[] args) throws InterruptedException {
        Sync02  sync02= new Sync02();
        Thread thread1=new Thread(sync02);
        Thread thread2=new Thread(sync02);
        thread1.start();
        thread2.start();
        thread1.join();
        thread2.join();
        System.out.println(i);
    }
}
/*****
Thread-0||||||||196669
Thread-0||||||||196670
Thread-1||||||||196655
Thread-1||||||||196672
 
Thread-1||||||||199994
Thread-1||||||||199995
Thread-1||||||||199996
Thread-1||||||||199997
Thread-1||||||||199998
Thread-1||||||||199999
Thread-1||||||||200000
200000
*/


作爲對比的是