I am confused in constructor...

Question

Give an exmple and teach me..
Add what is the use of constructor there

Answer 1

rules to use constructor
1).it's name must be the same as of class name
2).it must not have any return type

And working is very much similar to the function/method.
it is used to create instance of a class.
JVM always creates a default constructor for every class .
Constructor is of two types
1).default
2). parameterized
Ex:-
class A
{
A()//default constructor
{}
A(int b)// parameterized constructor
{}
//rest of the code.......
}

Answer 2

Constructor is a special function used to initialise variables in a class.
it is defined as-
eg-
class_name(int var)
{
int a=var;
}
here we have passed a variable var and assigned it to a which is a member of Class class_name.

Answer 3

Here is complete explanation about constructor: http://javabasictoadvanced.blogspot.co.id/2016/06/constructor.html

Answer 4

Thanku abhishek