Java 23 design mode-Singleton (Singleton mode)

/*** @Title Singleton.java * @Package Singleton * @date 2015-1-22 pm 02:39:57 *@versionV1.0*/ PackageSingleton;Importjava.io.Serializable;/*** @ClassName Singleton * @date 2015-1-22 pm 02:39:57*/ Public classSingletonImplementsserializable{Private StaticSingleton instance =NULL; //privatized constructors prevent other objects from being generated    PrivateSingleton () {}//There's only one public way.     Public StaticSingleton getinstance () {if(Instance = =NULL) {instance=NewSingleton (); }        returninstance; }//The result of a colleague's serialization also returns the need to maintain the current object    PrivateObject readresolve () {returninstance; }}

Java 23 design mode-Singleton (Singleton mode)