Java Dynamic Implementation Interface

 Package Com.yhouse.modules.daos;  Public Interface Iuserdao {    public  String getusername ();      Public String Say ();}

2.

 PackageCom.yhouse.modules.daos;ImportJava.lang.reflect.InvocationHandler;ImportJava.lang.reflect.Method; Public classMethodproxyImplementsInvocationhandler {@Override PublicObject Invoke (Object proxy, Method method, object[] args)throwsThrowable {//if passing in is a concrete class that has been implemented (this demo skips this logic)        if(Object.class. Equals (Method.getdeclaringclass ())) {              Try {                  returnMethod.invoke ( This, args); } Catch(Throwable t) {t.printstacktrace (); }          //If it comes in an interface (CORE)}Else{System.out.println (Method.getname ()); returnrun (method, args); }          return NULL; }        /*** Core approach to interface implementation *@parammethod *@paramargs *@return     */     PublicObject Run (Method method,object[] args) {//TODO//such as remote HTTP calls//such as Remote Method Invocation (RMI)//....           return"Method call success!"; }  }

3.

 PackageCom.yhouse.modules.daos;ImportJava.lang.reflect.Proxy; Public classTest { Public Static voidMain (string[] args)throwsClassNotFoundException {//TODO auto-generated Method StubString ClassName= "Com.yhouse.modules.daos.IUserDao"; String MethodName= "Say"; Class CLZ=Class.forName (className); //Object newproxyinstance = proxy.newproxyinstance (IUserDao.class.getClassLoader (), New class[]{iuserdao.class},m );Methodproxy m=NewMethodproxy (); Object newproxyinstance= Proxy.newproxyinstance (Clz.getclassloader (),Newclass[]{clz},m); Iuserdao UD=((Iuserdao) newproxyinstance); String s=Ud.getusername ();               System.out.println (s); String S1=ud.         Say ();    System.out.println (S1); }}

Java Dynamic Implementation interface