-Encapsulation is wrapping of data(Data members) and
associated methods(member functions) into a single unit in 
such a way that data can be accessed with the help of
associated methods.
--In a class we can specify the variables(Data members) as
private. So for other classes it will not be accessible. 
--Through methods(member functions) only we can access the
member variables or modify them. 
--It gives more security for our data. It is nothing but
data hiding.