Java Inner Class (5): application Example

Example 1-Closure (Closure)

A closure is a callable object (through callback) that records some information from the scope in which it was created

1 Interfaceincrementable {2     voidincrement ();3 }4 5 classCallee1Implementsincrementable {6     Private inti = 0;7 8 @Override9      Public voidincrement () {Teni++; One System.out.println (i); A     } - } -  the classmyincrement { -      Public voidincrement () { -System.out.println ("Other operation"); -     } +  -     Static voidf (myincrement mi) { + mi.increment (); A     } at } -  - classCallee2extendsmyincrement { -     Private inti = 0; -  - @Override in      Public voidincrement () { -         Super. Increment (); toi++; + System.out.println (i); -     } the  *     Private classClosureImplementsincrementable { $ @OverridePanax Notoginseng          Public voidincrement () { -Callee2. This. Increment (); the         } +     } A  the incrementable CallBack () { +         return NewClosure (); -     } $ } $  - classCaller { -     Privateincrementable callbackreference; the  - Caller (incrementable callbackreference) {Wuyi          This. callbackreference =callbackreference; the     } -  Wu     voidGo () { - callbackreference.increment (); About     } $ } -  - /** - * Keywords: internal class application, Closure (Closure) <br/> A * 1. A closure is a callable object (via callback) that records information from the scope in which it was created <br/> +  */ the  Public classTest007 { -  $      Public Static voidMain (string[] args) { theCallee1 C1 =NewCallee1 (); theC1.increment ();//1 theCallee2 C2 =NewCallee2 (); theMYINCREMENT.F (C2);//Other operation|1 -Caller Caller1 =NewCaller (C1); inCaller1.go ();//2 theCaller Caller2 =NewCaller (C2.callback ()); theCaller2.go ();//Other operation|2 About     } the}

Example 2-order of calls in complex cases

1 classEGG2 {2 3     protected classYolk {4          Publicyolk () {5System.out.println ("Egg2.yolk ()");6         }7 8          Public voidf () {9System.out.println ("Egg2.yolk.f ()");Ten         } One     } A  -     PrivateYolk y =Newyolk (); -  the      PublicEgg2 () { -System.out.println ("New Egg2 ()"); -     } -  +      Public voidinsertyolk (Yolk yy) { -y =yy; +     } A  at      Public voidg () { - y.f (); -     } - } -  - classTest008subextendsEGG2 { in      Publictest008sub () { -System.out.println ("AA"); toInsertyolk (Newyolk ()); +     } -  the      Public classYolkextendsEgg2.yolk { *          Publicyolk () { $System.out.println ("Bigegg2.yolk ()");Panax Notoginseng         } -  the          Public voidf () { +System.out.println ("Bigegg2.yolk.f ()"); A         } the     } + } -  $ //order of calls in complex cases $  Public classTest008 { -      Public Static voidMain (string[] args) { -         Newtest008sub (). g (); the         //egg2.yolk () -         //New Egg2 ()Wuyi         //AA the         //egg2.yolk () -         //bigegg2.yolk () Wu         //Bigegg2.yolk.f () -     } About}

Java Inner Class (5): application Example