Constructor

A constructor is similar to a method that is used to initialize the instance variable.

Some points to remember when writing constructors

• The constructor name and class name must be same.


• Constructor may or may not have parameters.


• A constructor does not return any value not even void.


• Constructor is called only once at the time of creating the objects.


• A constructor with out any parameter is called default constructor.


• A constructor with one or more parameters is called parameterized constructor.


• Default constructors are stored the same data in all objects.


• Parameterized Constructor is used with initialize the object with default data.


• Writing two or more constructors with the same name but difference in the parameters is called constructor overloading.

NOTE:

When no constructor written in the class when java compiler act’s default constructor with default values.