Java-singleton (singleton creation-a hungry man type, lazy type)

 PackageCom.easygo.singleton;/*** Java Singleton There are two ways, a hungry man and lazy, a hungry man is loaded before the object is created, take precedence over the object, and the lazy is to call the object after the object creation method to create the object *, understand the JVM loading principle is clear, the true meaning of the singleton is a hungry man, before the object is created. * @authorLX **/ Public classSingleton {//a hungry man type     Public StaticSingleton singleton=NULL; Static{Singleton=NewSingleton (); }        //Lazy Type     Public StaticSingleton Getsingleton () {if(NULL==Singleton) {Singleton=NewSingleton (); returnSingleton; }Else {            returnSingleton; }                    }}

Java-singleton (singleton creation-a hungry man type, lazy type)