Question

What is a constructor in Java?

Answer 1

The use of private constructor is to serve singleton classes. A singleton class is one which limits the number of objects creation to one. Using private constructor we can ensure that no more than one object can be created at a time. By providing a private constructor you prevent class instances from being created in any place other than this very class. We will see in the below example how to use private constructor for limiting the number of objects for a singleton class.

Answer 2

Answer:

constructors are used in initialise the object state like methods a constructor also contains a collection of statements that are executed at time of object creation.