Simple and thread-safe two single-mode Java programs

/**
* Specific instructions See  http://www.cnblogs.com/coffee/archive/2011/12/05/inside-java-singleton.html
*/


package Com.work.pattern;  Public class Singleton2 {
    Private Static  New Singleton2 ();     Private Singleton2 () {            }    publicstatic  Singleton2 getinstance () {         return  instance;}    }

 PackageCom.work.pattern;/*** Single-instance mode innovation! Written by the IOC author of Google. It is initialized only at the time of the call! and thread safe * Super Bull!  * */ Public classSingleton {Static classSingletonholder {StaticSingleton instance =NewSingleton (); }     Public StaticSingleton getinstance () {returnsingletonholder.instance; }}

Simple and thread-safe two single-mode Java programs