java - What part of OOP are constructors?

Question

Do parameterised constructors fall under encapsulation or abstraction, or something else entirely as a part of object-oriented programming?

question from:https://stackoverflow.com/questions/65932516/what-part-of-oop-are-constructors

Answer 1

First of all, Java constructors are what they are and do what they do, irrespective of how you categorize them.

My take is that constructors are clearly an example of abstraction in that they hide the algorithmic details of object initialization.

Since the constructor isn't actually the mechanism that hides the state of an object, they aren't an encapsulation mechanism. But obviously they work with the encapsulation mechanism; i.e. field access modifiers.
The above applies to both parameterized and non-parameterized constructors.

For more resources explaining the difference between encapsulation and abstraction, see:

• Difference between Abstraction and Encapsulation in Java with Examples
• Difference between abstraction and encapsulation?