CONSTRUCTOR

Definition - Constructor is a special type of method i e. used to initialize a newly created object & is just called after memory is allocated for object.

Rules to be followed while defining constructor- 

1. It has same name as that of class.
2. No return type should be there.
3. Constructors can use any access modifier, including private.

Note:-  You can define method with the same name as of class. Example-

class A{
  private A()
{
// Constructor with private access modifier, it means object of class A can only be instantiated with //in the class not outside it.To instantiate from outside class you have to use static method with in // //class A.
}
public void A()
{
// Legal method
}

public static void main(String... x)
{
new A(); // anonymous object
}
}

Q1. Do constructors have  return type?
Ans. Yes. Constructors return reference of their class.
         Do some practical .

 class A{
  A( ){

return ; // will not give any error. This proves that constructors returns something.
}
public static void main( )
{
System.out.println(new A( ));  // It will print A@1270b73 (ClassName@hashcode)  constroctur
}
}