Instance Variables is bassucally defined as :
> An Instance variable is belongs to an individual object.
> Instance variables may be accessed from other methods in the class, or from methods in other classes depending on the access control.
> Instance variables may not be accessed from static methods, however, because a static method could be invoked when no instances of the class exist.
> Logically, if no instances exist, then the instance variable will also not exist, and it would be impossible to access the instance variable.