Types of Constructor

Type of Constructor

There are two types of constructor and these are following:-

Static Constructor(also known as class constructor)

Non static Constructor(also known as instance constructor)

Static Constructor

Static constructor is that constructor which is called before the object creation of class. Basically static constructor is used to initialize the static variable of the class.

Syntax of Static Constructor

Static class_name(){ }

Features of the static Constructor

• There is no access modifier of static constructor
• There is only one static constructor in the class which means we can't overload the static constructor.
• Static constructor can only initialize the static variable of the class.
• We can’t pass any parameter to the static constructor.

Non static Constructor

These constructors are used to initialize the value of member variable of the class at the time of creation of object.

Type of non static constructor

• Default Constructor
• Parametrized Constructor
• Copy Constructor

Default constructor

Default constructor is a constructor with no argument

Interview Questions based on Default constructor

		
public class_name()
{         }

Parametrized constructor

		
		Public class_name(int x)
		{               
		}

		

Copy constructor

Copy constructor is a constructor having argument of same class

I have created a class name calculator and in copy constructor we pass the object of same class

		
		Public calculator(calculator cal)
{      }