Some questions about abstract class with private, public and protected constructors

Question

My first question: What is the difference between an protected and a public constructor in an abstract class?

My second questions: Does it make sense, if the abstract cl

Answer 1

1. Very little. The public constructor can only be used as a protected one.

2. Yes, it can be called ('sideways') with the this keyword from other (protected/public) constructors.