relationship with classes

Question

In this case:
TypeA objA = new TypeB();

I said:
TypeB class has to be a super class of TypeA in order to create a object that is TypeA from TypeB.
Am I correct?

Answer 1

TypeA can also be an interface that TypeB implements. e.g.

List myList = new ArrayList();

Also, TypeA could be a superclass of a superclass of TypeB, etc.

Comments

Or could TypeA be an abstract class which TypeB is a subclass of?

Answer 2

I think it's for interfaces though, like for instance:

List names = new ArrayList<>();