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package com.msb.singleton;
/**
* @Author bingor
* @Date 2022-10-06 10:25
* @Description:
* 饿汉式
* 类加载到内存后，就实例化一个单例，JVM保证线程安全
* 简单实用，推荐使用！
* 唯一缺点：不管用到与否，类加载是就完成了实例化
* （话说你不用的，你装载它干啥）
* @Version: 1.0
*/
public class Singleton01 {
private static final Singleton01 INSTANCE = new Singleton01();
private Singleton01() {}
public static Singleton01 getInstance() {
return INSTANCE;
}
public static void main(String[] args) {
Singleton01 singleton1 = Singleton01.getInstance();
Singleton01 singleton2 = Singleton01.getInstance();
System.out.println(singleton1 == singleton2);
