How to create constructors in java

Constructors :-A constructor is a special method that is used to initialize an object.

Rules for creating constructors:

• Constructor name must be same as its class name.
• Constructor has no return type. 

 Constructors are two types:

1. Default Constructor
2. Parameterized Constructor

1.Default Constructor:-A constructor that have no parameter is known as default constructor.

class Cons{

int x,y;

Cons(){

x=5;

y=6;

}

public void sum(){

int s=x+y;

System.out.println("Addition of two numbers is : "+s);

}

public static void main(String args[]){

Cons obj=new Cons();

obj.sum();

}

}

OUTPUT:-

C:\Users\Satyendra\Desktop>javac 1.java

C:\Users\Satyendra\Desktop>java Cons

Addition of two numbers is : 11