CodeGym/Help with Java Tasks/Frustrated with the getDescription() verification

Level 29

Seattle

30.01.2019
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12comments

Frustrated with the getDescription() verification

Question about the task

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I've been trying all kinds of combinations from other posts for over 30 minutes now and still can't get it to verify. This is a poorly written exercise. Tried with/without a space after super.getDescription(). Tried hardcoding the country and using Contintent.<country name>; tried with NorthAmerica and North America hardcoded. Tried this.getMonthlyEggCount() and without the this keyword. Can someone please just copy and paste exactly what they have for one of their Hen subclass getDescription() that verified correctly?

Write a factory (HenFactory) for making chickens (Hen):

1. Write a Hen class.
1.1. Make it abstract.
1.2. Add an int getMonthlyEggCount() method to the abstract class.
1.3. Add a String getDescription() method to the class. It should return "I am a chicken."
2. Create an NorthAmericanHen class that inherits Hen.
3. Create an EuropeanHen class that inherits Hen.
4. Create an AsianHen class that inherits Hen.
5. Create an AfricanHen class that inherits Hen.
6. In each of these four classes, write your own implementation of the getMonthlyEggCount method.
The method should return the number of eggs per month produced by that type of chicken.
7. In each of these four classes, write your own implementation of the getDescription method.

The method must return a string as follows:
<parent class>.getDescription() + " I come from <continent>. I lay <n> eggs a month."
where <continent> is the name of the continent
and <n> is the number of eggs per month.

8. In the HenFactory class, implement the getHen method. It should return a chicken breed corresponding to the continent that the chicken came from.
9. All the classes you create must be in separate files.

Requirements:

The Hen class must be abstract.
The Hen class must have an abstract int getMonthlyEggCount() method.
The Hen class must implement a String getDescription() method, which returns "I am a chicken."
The NorthAmericanHen, EuropeanHen, AsianHen, and AfricanHen classes must inherit the Hen class and be located in separate files.
The NorthAmericanHen, EuropeanHen, AsianHen, and AfricanHen classes must implement the getMonthlyEggCount method, which should return the number of eggs per month laid by the corresponding type of chicken.
The NorthAmericanHen, EuropeanHen, AsianHen, and AfricanHen must override the parent class's getDescription method so that the returned string looks like this: <parent class>.getDescription() + " I come from <continent>. I lay <n> eggs a month." where <continent> is the name of the continent, and <n> is the number of eggs per month.
The getHen method must be implemented in the HenFactory class and must return the chicken type that corresponds to the passed continent.

package com.codegym.task.task14.task1408; /* Chicken factory */ public class Solution { public static void main(String[] args) { Hen hen = HenFactory.getHen(Continent.AFRICA); hen.getMonthlyEggCount(); } static class HenFactory { static Hen getHen(String continent) { Hen hen = null; if (continent.equalsIgnoreCase("northamerica")) { hen = new NorthAmericanHen(); } else if (continent.equalsIgnoreCase("europe")) { hen = new EuropeanHen(); } else if (continent.equalsIgnoreCase("asia")) { hen = new AsianHen(); } else if (continent.equalsIgnoreCase("africa")) { hen = new AfricanHen(); } return hen; } } }

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Guadalupe Gagnon

Level 37 , Tampa, United States

30 January 2019, 20:03

solution

here is my NAHen:

public class NorthAmericanHen extends Hen {
    @Override
    int getMonthlyEggCount() {
        return 5;
    }

    String getDescription(){
        return super.getDescription() + " I come from NorthAmerica. I lay "+ getMonthlyEggCount() +" eggs a month.";
    }
}

Andrew

Level 29 , Seattle, United States

30 January 2019, 22:06

It was the space " I come from...". I swear I tried it but must have had so many other variations that I never tried that particular combo. Thank you so much!

Guadalupe Gagnon

Level 37 , Tampa, United States

31 January 2019, 04:32

Get used to things like this, I personally was pulling my hair out with some of these tasks up to level 20. Managed to complete everyone though through sheer determination and stuborness.

Andrew

Level 29 , Seattle, United States

31 January 2019, 16:47

You're right! I attempted that one 20 times before successful. Some other ones I've run into are similarly picky and unfortunately unclear in the conditions. To put a positive spin on things, I think it's a nice skill to learn how to ask others for help when you need it. Thanks again for your help!

Guadalupe Gagnon

Level 37 , Tampa, United States

31 January 2019, 16:47

I think my highest attempts for one task was 48ish

Andrew

Level 29 , Seattle, United States

31 January 2019, 16:59

<cringe> Not looking forward to that one.

Guadalupe Gagnon

Level 37 , Tampa, United States

31 January 2019, 17:05

LOL. You may see the requirements different than I did and solve it in just a couple attempts. It was hard for me because there are only but a handful of people at or above my level, so I never had any replies back when i asked for help. If I haven't said this already, I encourage you to go to the help boards from time to time and add replies to some of them. I have learned more from diagnosing other people's problems than I did from reading the lessons. You will also see a lot of different ways of solving the same problem, and almost always find a better solution that what you came up with the first time. My code, and understanding, has improved quite a bit since i started doing this.

Andrew

Level 29 , Seattle, United States

31 January 2019, 17:22

I'm glad you said something. From the beginning, I have been going through all the questions in the Help section to answer questions or just to see how others have been writing their code. I think it would be an awesome feature if there was a section (only accessible after successfully verifying the code) where we could post our correct answers so people could see different styles or solutions. I've experienced other programs that had this feature and it was a terrific learning tool.

Guadalupe Gagnon

Level 37 , Tampa, United States

30 January 2019, 19:18

I think your bigger problem is if they lay " eggs per month" or " eggs a month". you need to fix this to match requirements.

Andrew

Level 29 , Seattle, United States

30 January 2019, 19:29

Thanks for the suggestion but it still won't verify.

Hashirama

Level 26 , Port-Harcourt, Nigeria

6 February 2019, 03:55

Use Continent.Africa, Continent.Asia, etc rather than specifying the name yourself Use the int variable MONTHLY_EGG_COUNT for all the classes except for the AfricanHen class Use getMonthlyEggsCount method for the AfricanHen class. You must change your "I lay n eggs per month" to "eggs a month. for the Classes. The Mentors suggestion still went with "eggs a month." Perhaps you should add public to your getDescription method in the sub-classes.

Andrew

Level 29 , Seattle, United States

6 February 2019, 17:27

Thanks!