Some questions about 13 - Dog.Java

[waelhaidar]

I don’t understand why we included :
-int age
-public dog(int dogsAge)
-age= dogsAge

If we don’t use them
Moreover, what does the : dog spike = new Dog(17) stand for ? and why is it included ?

https://www.codecademy.com/courses/learn-java/lessons/object-oriented-programming/exercises/using-methods-2?action=lesson_resume&link_content_target=interstitial_lesson

It would be really greatfull if anyone can explain to me there objective
Thank you

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[albionsrefuge]

int age

That instance variable called age is being created to hold a detail of any Dogs that we create.

public dog(int dogsAge)

That is defining the constructor that will be used every time we create a new Dog. It will be expecting a value, a parameter called dogsAge, to be sent in when a Dog is created. The parameter will be an integer.

age= dogsAge

There we are assigning the value of the parameter to our instance variable.

Dog spike = new Dog(17)

That is how we create a new Dog. It will be called spike and it will have a dogsAge of 17.

[waelhaidar]

Thank you
It was very helpful