Output is correct but the 5th condition fails

Pytania dotyczące zadania

Dyskutowane

Does any of you have a clue why it fails? I've got the correct output but maybe I've made the overkill during iterating through all methods inside SomeInterfaceWithMethodsImpl class?

1) In a separate file, create a public CustomInvocationHandler class that will be the invocation handler when creating a proxy object.
2) CustomInvocationHandler must support the InvocationHandler interface.
3) CustomInvocationHandler must have one public constructor with a single SomeInterfaceWithMethods parameter.
4) Before calling any of the original object's methods, the phrase "<methodName> in" must be displayed.
5) After calling one of the original object's methods, the phrase "<methodName> out" must be displayed.
6) Implement the getProxy() method, which must create a proxy (Proxy.newProxyInstance(...)).
See the example output in the main() method.
The main() method is not tested.

Wymagania:

There must be a CustomInvocationHandler class.
The CustomInvocationHandler class must support the InvocationHandler interface.
The CustomInvocationHandler class must have one public constructor with a single SomeInterfaceWithMethods parameter.
Before calling any of the original object's methods, the phrase "<methodName> in" must be displayed.
After calling one of the original object's methods, the phrase "<methodName> out" must be displayed.
The getProxy() method must create a proxy for the SomeInterfaceWithMethods interface.

package com.codegym.task.task32.task3205; /* Creating a proxy object */ import java.lang.reflect.Proxy; public class Solution { public static void main(String[] args) { SomeInterfaceWithMethods obj = getProxy(); obj.stringMethodWithoutArgs(); obj.voidMethodWithIntArg(1); /* Expected output: stringMethodWithoutArgs in inside stringMethodWithoutArgs stringMethodWithoutArgs out voidMethodWithIntArg in inside voidMethodWithIntArg inside voidMethodWithoutArgs voidMethodWithIntArg out */ } public static SomeInterfaceWithMethods getProxy() { SomeInterfaceWithMethodsImpl obj = new SomeInterfaceWithMethodsImpl(); ClassLoader objClassLoader = obj.getClass().getClassLoader(); Class[] objInterfaces = obj.getClass().getInterfaces(); SomeInterfaceWithMethods proxyObj = (SomeInterfaceWithMethods) Proxy .newProxyInstance(objClassLoader, objInterfaces, new CustomInvocationHandler(obj)); return proxyObj; } }

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Jakub Raczkowski

Poziom 41 , Polska, Poland

21 listopada 2023, 11:08

except the invoke method in return statement you need to use it above and surround with sout (in and out)