quanke设计模式Java版
Updated 2 years ago
饿汉式单例类不能实现延迟加载，不管将来用不用始终占据内存；懒汉式单例类线程安全控制烦琐，而且性能受影响。可见，无论是饿汉式单例还是懒汉式单例都存在这样那样的问题，有没有一种方法，能够将两种单例的缺点都克服，而将两者的优点合二为一呢？答案是：Yes！下面我们来学习这种更好的被称之为Initialization Demand Holder (IoDH)的技术。
Initialization On-Demand Holder (IoDH)
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