What use are constructors in abstract classes? [duplicate]

Question

Since we can't instantiate an abstract class, then what is the necessity of having constructors in abstract class?

Answer 1

Abstract classes are designed to be extended, each constructor from the child must perform a call to a constructor from the base class, thus you need constructors in your abstract class.

The abstract class is a skeleton and thus makes no sense to instantiate it directly since it is still incomplete (children will provide the rest).

Answer 2

We can use a abstract class constructor to execute code that is relevant for every subclass. This way preventing duplicate code