使用violate关键字解决了变量的可见性问题(volatile让多线程刷新falg的值)
package com.cppdy; class MyThread11 extends Thread { //volatile让多个线程刷新falg的值 public volatile boolean falg = true; @Override public void run() { System.out.println("子线程开始执行啦"); while (falg) { } System.out.println("子线程结束执行啦"); } public void setFalg(boolean falg) { this.falg=falg; System.out.println("falg的值:"+this.falg); } } public class ThreadDemo11 { public static void main(String[] args) throws Exception { MyThread11 mt = new MyThread11(); mt.start(); Thread.sleep(1000); mt.setFalg(false); System.out.println("主线程结束啦"); } }
当更改falg的值,volatile会更新其它线程falg的值
原文地址:https://www.cnblogs.com/cppdy/p/10016037.html
时间: 2024-10-09 14:24:02