Overriding a super class's instance variables

Question

Why are we not able to override an instance variable of a super class in a subclass?

Answer 1

If you have the need to override an instance variable, you are almost certainly inheriting from the worng class.

In some languages you can hide the instance variable by supplying a new one:

class A has variable V1 of type X;

class B inherits from A, but reintroduces V1 of type Y.

The methods of class A can still access the original V1. The methods of class B can access the new V1. And if they want to access the original, they can cast themself to class A (As you see dirty programming provokes more dirty progrtamming).

The best solution is to find another name for the variable.