Can I make a superclass's variable static final in subclass?
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you cannot replace variables of subclasses
and especially not make them static or final
the only thing you can do is assigning them in the constructor or creating more variables
I just want to understand what is the effect of doing that - we have a definition of instance variable about in superclass; then in subclass we are creating a static variable in the same variable name.
Good question. The effect should be that both separate variables still exist, but the one in the subclass shadows the one in the superclass.
So if you write
about in the subclass, it will refer to Bots.subclass.is it called polymorphism?
No.
or encapsulation or something 😦
Polymorphism is when you have an instance of a subclass in a superclass-type variable.
Encapsulation is just when one object is a field in another.
When these variables use the same name, you get shadowing, but the names being the same doesn’t result in encapsulation or polymorphism.
Thank you for your time. ❤️
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it results in you having two variables with the same name as mentioned by Snake, yes
if you access the variable from
User, you get User#about and from Bots, you get Bots.aboutI think about is not static variables in superclass User.
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