Why can't we instantiate an abstract class in Java?

Question

I understand:

1. Since an abstract class is nothing on its own, e.g. vehicle, we want to create an object of an concrete implementation, like Car, Bike, etc.

Answer 1

The reason why Java doesnt allows an abstract class to be instantiated is logical. We haven't given the definition of a method and therefore, if it had allowd the creation of the object, there was no return address to pop the function from the stack and we get thus, stuck. Thus, its logical only not to allow the object instattion.