设计模式-单例模式

1.用到的类

一个用于获取单例的类。

2.实现代码

懒汉式

/*** 懒汉式单例模式*/
public class SingleLazy {private static SingleLazy singleLazy = new SingleLazy();public static SingleLazy getInstance(){return singleLazy;}
}

饿汉式

/*** 饿汉式单例**/
public class HungrySingle {private static HungrySingle instance = null;public static synchronized HungrySingle getInstance(){if(instance == null){instance = new HungrySingle();}return instance;}
}