Cannot find symbol continent

Question about the task

Chicken factory

Java Core, Level 4, Lesson 6

Under discussion

Why is this error keeps on showing?

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 == Continent.AFRICA) hen = new AfricanHen(); else if(continent == Continent.NORTHAMERICA) hen = new NorthAmericanHen(); else if(continent == Continent.EUROPE) hen = new EuropheanHen(); else if(continent == Continent.ASIA) hen = new AsianHen(); return hen; } } }

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Guadalupe Gagnon

Level 37 , Tampa, United States

3 June 2021, 14:50

Because, in the Solution class, you create a variable of the super class 'Hen' type and then create an object of a specific sub class, all the sub classes need to extend the super class. You can't cast a class to another class if it is not a valid super class and the code will not compile until the way it is. There is also a typo on line 23 of the Solution class.

Guadalupe Gagnon

Level 37 , Tampa, United States

3 June 2021, 14:52

BTW congratulations and good job on making it to level 14. Are you still doing all the tasks on a phone/tablet?

John

Level 17 , Mansfield, Philippines

4 June 2021, 15:25

Thank you very much. yes im still doing it on a phone cause i cant afford to buy laptop for now. im a full time student but i hope if i can save money little by litte to afford atleast a low end laptop :)

John

Level 17 , Mansfield, Philippines

4 June 2021, 15:43

Im from philippines by the way ;)

Thomas

Level 41 , Bayreuth, Germany

5 June 2021, 12:38

Without IDE I would have given up a long time ago. I even can't imagine anymore to do all the basic stuff myself like importing classes or looking for available methods. In a few weeks you're probably the best coder of us all ;)

John

Level 17 , Mansfield, Philippines

5 June 2021, 16:00

Thank you for this kind of motivation thomas :)

Guadalupe Gagnon

Level 37 , Tampa, United States

5 June 2021, 18:00

He is learning the way people used to have to learn computer programming. I agree though that he is going to be a super coder compared to someone who has been learning for just as long as him.

John

Level 17 , Mansfield, Philippines

6 June 2021, 02:27

Thank you sir Guadalupe, i will finish this course no matter how hard it is and will always learn to rest but not to give up ;)