Who can help find mistake?

Question about the task

Chicken factory

Java Core, Level 4, Lesson 6

Under discussion

I think that all is ok. Text os screan is OK.

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(); NorthAmericanHen nc = new NorthAmericanHen(); System.out.println(nc.getDescription()); Hen hen2 = HenFactory.getHen("asia"); System.out.println(hen2.getDescription()); } 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; } } }

Comments (4)

Popular
New
Old

You must be signed in to leave a comment

Misiu

Level 41 , Gdansk, Poland

26 August 2020, 12:39

useful

Continent.AFRICA eggs, not egss this - not neccesary

Marek Pasierbek Working at Nexus Polska

26 August 2020, 14:58

You are my hero!

Artem

Level 0

26 August 2020, 10:34

useful

1. this is wrong string. need equal with case! (continent.equals(Country.EUROPE))

public interface Continent {
    String EUROPE = "Europe";

and

else if(continent.equalsIgnoreCase("europe")){

2. AsianHen and other class don't need implements interface Continent. use

" I come from " + Country.ASIA + ". I lay "

3. you lost "space" before eggs

"egss a month.";

Marek Pasierbek Working at Nexus Polska

26 August 2020, 12:19

better but still nok ok The description of an AfricanHen should have the following format: <parent class>.getDescription() + " I come from Africa. I lay <n> eggs a month.", where <n> is the number of eggs per month (returned by the getMonthlyEggCount method). For example: I am a chicken. I come from Africa. I lay 5 eggs a month.