package designPattern;

public class Singleton1 {
    //懒汉式LazyHolder Singleton 调用static类型的getInstance方法后才得到对象实体
    private Singleton1() {

    }

    //通过静态内部类使用时在加载的原理
    private static class SingletonHolder {
        private static final Singleton1 INSTANCE = new Singleton1();
    }

    public static final Singleton1 getInstance() {
        return SingletonHolder.INSTANCE;
    }

    public static void main(String[] args) {
        Singleton1 singleton1 = SingletonHolder.INSTANCE;

    }
}