The validation fails and it asks me to implement canDefend interface, what am I missing?

Question about the task

Robot wars

Java Core, Level 3, Lesson 11

Under discussion

I can't figure this out. I have implemented canDefend interface, but the compiler doesn't seem to agree.

1. Familiarize yourself with the code.
2. Accept your fate and keep trying to understand the code.
3. ...
4. Rejoice that you've figured it out.
5. Adapt the code to the following new architecture and add new logic:
5.1. Make the AbstractRobot class abstract. Then move the attack and defend logic from the Robot class to the AbstractRobot class.
5.2. Edit the Robot class to utilize the AbstractRobot class.
5.3. Extend the BodyPart class with a new body part: BodyPart.CHEST.
5.4. Add the new body part to the implementation of the CanAttack and CanDefend interfaces (in the AbstractRobot class).

Requirements:

The AbstractRobot class must be abstract.
The AbstractRobot class must implement the CanAttack and CanDefend interfaces.
The Robot class must inherit the AbstractRobot class.
The logic defining the how a Robot behaves must be in the AbstractRobot class.
The BodyPart class must have and initialize a final static BodyPart variable called CHEST.
The new body part must be added to the logic for the attack and defend methods in the AbstractRobot class.

package com.codegym.task.task13.task1328; /* Robot wars */ public class Solution { public static void main(String[] args) { AbstractRobot amigo = new Robot("Amigo"); AbstractRobot enemy = new Robot("Enemy"); doMove(amigo, enemy); doMove(amigo, enemy); doMove(enemy, amigo); doMove(amigo, enemy); doMove(enemy, amigo); doMove(amigo, enemy); doMove(enemy, amigo); doMove(amigo, enemy); } public static void doMove(AbstractRobot robotFirst, AbstractRobot robotSecond) { BodyPart attacked = robotFirst.attack(); BodyPart defended = robotFirst.defend(); System.out.println(String.format("%s attacked %s: its %s was attacked, and its %s was defended", robotFirst.getName(), robotSecond.getName(), attacked, defended)); } }

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Guadalupe Gagnon

Level 37 , Tampa, United States

29 October 2019, 14:18

What is line 3 doing in the AbstractRobot class?

mail.musa.khan

Level 22 , Bloomington, United States

29 October 2019, 14:44

I have no idea. It was IntelliIDEA's idea :) (sorry couldn't resist saying it) I don't know. IntellijIDEA put that in.

Guadalupe Gagnon

Level 37 , Tampa, United States

29 October 2019, 15:44

Nice little pun. I find it adds imports sometimes that affect the verification. Have you removed it and tried validating? Other problems/ideas: #1 get rid of line 10 in the AbRo class. If they create a new object using that constructor and then call getName, null will be returned as name will not have been initialized. #2 You have 'name' in both Robot class and AbRo class. It looks like the code is calling getName() on AbRo (line 27 of Solution), so try removing it, and all methods that use it, from the Robot class. What should be left is a constructor that takes in a name and passes it to 'super'. #3 if all these fail, try swapping canAttack and canDefend. It may be silly but I have seen some bizarre things that fail verification.

mail.musa.khan

Level 22 , Bloomington, United States

29 October 2019, 16:49

Thank you Guadalupe! The mistake was very silly: spelling/capitalization - The task wants me to implement CanAttack and CanDefend interfaces - not canAttack and caDefend.

Guadalupe Gagnon

Level 37 , Tampa, United States

29 October 2019, 16:54

Those mistakes are easy to make, I didn't even catch that you had it different from the task.