Understanding-Adorner Mode-design mode

 PackageCom.hk.ztry;Interfacesourcable { Public voidoperation (); }  classSourceImplementssourcable { Public voidoperation () {SYSTEM.OUT.PRINTLN ("The Soure class implements the method in the original interface sourcable"); }  }classDecorator1Implementssourcable {Privatesourcable sourcable;  PublicDecorator1 (sourcable sourcable) {Super();  This. sourcable=sourcable; }             Public voidoperation () {SYSTEM.OUT.PRINTLN ("Before 1th decorator");          Sourcable.operation (); System.out.println ("After 1th adorner"); }  }  classDecorator2Implementssourcable {Privatesourcable sourcable;  PublicDecorator2 (sourcable sourcable) {Super();  This. sourcable=sourcable; }       Public voidoperation () {SYSTEM.OUT.PRINTLN ("Before 2nd decorator");           Sourcable.operation (); System.out.println ("After 2nd adorner"); }  }   Public classTestdecorator { Public Static voidMain (string[] args) {sourcable source=NewSource (); //good magic, interface =new implementation class (); //then the interface, which embodies the function of the realization class,//Interface =new Decoration class (),//then the interface, in the original implementation of the class has been decorated functionsourcable obj =NewDecorator1 (NewDecorator2 (source));      Obj.operation (); }  }

Understanding-Adorner Mode-design mode