Why do constructors not return values?
So the reason the constructor doesn’t return a value is because it’s not called directly by your code, it’s called by the memory allocation and object initialization code in the runtime.
Its return value (if it actually has one when compiled down to machine code) is opaque to the user – therefore, you can’t specify it..
What happens if you keep a return type for a constructor?
Since constructor can only return the object to class, it’s implicitly done by java runtime and we are not supposed to add a return type to it. If we add a return type to a constructor, then it will become a method of the class. This is the way java runtime distinguish between a normal method and a constructor.
Can we inherit a constructor?
Constructors are not members, so they are not inherited by subclasses, but the constructor of the superclass can be invoked from the subclass.
Can we declare constructor as private?
Yes, we can declare a constructor as private. If we declare a constructor as private we are not able to create an object of a class. We can use this private constructor in the Singleton Design Pattern.
Can constructor return a value in C++?
Constructors are functions that do not return a value. The family of functions that do not return a value consists of: void functions, constructors and destructors. It is stated in 6.6. 3/2 in the C++ standard.
Can constructor return a value in Python?
As a special constraint on constructors, no value may be returned; doing so will cause a TypeError to be raised at runtime. But, of course, adding the return None doesn’t buy you anything.