Java设计模式单例模式singleton-阿里云

浅谈JAVA设计模式之——单例模式（Singleton）看几个单例对象的示例代码，其中有些代码是线程安全的，有些则不是线程安全的，需要大家细细品味，这些代码也是冰河本人在高并发环境下测试验证过的。代码一：SingletonExample1这个类是懒汉模式，并且是线程不安全的package io.binghe.concurrency.example.sin...

java设计模式3--单例模式（Singleton）单例模式保证一个类仅有一个实例，并提供一个访问它的全局访问点。概述单例模式是关于怎样设计一个类，并使得该类只有一个实例的成熟模式，该模式的关键是将类的构造方法设置为private权限，并提供一个返回它的唯一实例的类方法。适用性 1.当类只能有一个实例而且客户可以从一个众所周知的访问点访问它时...

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