Constructor Interview Question Answer

Define Constructor?

• Constructor is a special method given in OOP language for creating and initializing object.

• In java , constructor role is only initializing object , and new keyword role is crating object.

 What are the Rules for defining a constructor?

Constructor name should be the same as the class name

It cannot contain any return type

It can have all Access Modifiers are allowed (private , public, protected, default)

It Cannot have any Non Access Modifiers (final ,static, abstract, synchronized)

No return statement is allowed

It can take any number of parameters

Constructor can throw exception, we can have throws clause

Can we declare constructor as private?

 Yes we can declare constructor as private. But it does not  allow user to create object from outside of our class