Question

It works fine when constructors are not defined, but gives errors if I define a parameterized constructor and not a default one and not passing any values while creating an object. I thought constructors are predefined.

Why do I need to define a default constructor if I’ve defined a parameterized constructor? Ain’t default constructor predefined?

Answer 1

A default (no-argument) constructor is automatically created only when you do not define any constructor yourself.

If you need two constructors, one with arguments and one without, you need to manually define both.