Design Patterns-Template methods

Structure diagram:

Realize:

1 Abstract classAbstractClass2 {3     Abstract voidPrimitiveOperation1 ();//deferred to subclass implementation4     Abstract voidPrimitiveOperation2 ();//deferred to subclass implementation5     6      Public voidTemplatemethod ()7     {8 PrimitiveOperation1 ();9 PrimitiveOperation2 ();Ten          One     } A      - } -  the classConcreteclassaextendsabstractclass{ -  -     voidPrimitiveOperation1 () -     { +System.out.println ("Concrete Class A method one implementation"); -     } +      A     voidPrimitiveOperation2 () at     { -System.out.println ("Concrete Class A method two implementations"); -     } - } -  - classConcreteclassbextendsabstractclass{ in     voidPrimitiveOperation1 () -     { toSystem.out.println ("Concrete class B method one implementation"); +     } -      the     voidPrimitiveOperation2 () *     { $System.out.println ("Concrete class B Method II Implementation");Panax Notoginseng     } - } the  +  Public classTemplatemethod { A      Public Static voidMain (string[] args) the     { + AbstractClass C; -      $c =NewConcreteclassa (); $ C.templatemethod (); -  -c =NewCONCRETECLASSB (); the C.templatemethod (); -     }Wuyi      the      -}

Application:

The template method abstracts the repeated behavior into the parent class, and some specific implementations of the algorithm framework are defined by subclasses, increasing the code reuse rate.

Design Patterns-Template methods