/** * @author :nx014924 * @date :Created in 5/30/2021 1:09 PM * @description: * @modified By: * @version: */ public class Singleton { private static Singleton singleton; //双检锁实现懒汉式单例模式 public static Singleton getSingleton(){ if (singleton == null){ synchronized (Singleton.class){ if (singleton == null) singleton = new Singleton(); } } return singleton; } }