package com.basic; import java.util.concurrent.TimeUnit; /** * @program JavaBooks * @description: volatile关键字 * @author: mf * @create: 2019/12/28 22:54 */ public class T6 { /*volatile*/ boolean running = true; // 对比一下有无valotile的情况下，整个程序运行结果的区别 void m() { System.out.println("m start"); while (running) { // 啥都没得 // try { // TimeUnit.SECONDS.sleep(1); // } catch (InterruptedException e) { // e.printStackTrace(); // } } System.out.println("m end ..."); } public static void main(String[] args) { T6 t6 = new T6(); new Thread(() -> t6.m(), "t1").start(); try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); } t6.running = false; } }