Java Software Design Patterns--"A Hungry Man" and "lazy" examples in a singleton design pattern

The following is the code for the two classic modes in the singleton design pattern:

1 Singleton design mode (Spring framework IOC, which is created by default, is singleton):2 a hungry man type:3      Public classSingleclass {4         PrivateSingleclass () {}//privatization construction method cannot new object5         Private Static FinalSingleclass s=NewSingleclass ();6         //returns this class of objects7          Public StaticSingleclass getinstance () {8             returns;9         }Ten     } One  A Lazy Type: -      Public classLazysingleclass { -         PrivateLazysingleclass () {} the         Private StaticLazysingleclass lsc=NULL; -         //Synchronizing code blocks -          Public synchronized StaticLazysingleclass getinstance () { -             if(lsc==NULL) +Lsc=NewLazysingleclass (); -                 returnLSC; +         } A}

Java Software Design Patterns--"A Hungry Man" and "lazy" examples in a singleton design pattern