The Wrapping up of Data and functions into a single unit is
Called Encapsulation.

The binding up of data & code into a single unit is called 
as ENCAPSULATION

Encapsulation is the mechanism that binds together code and 
the data it manipulates,
and keeps both safe from outside interference and misuse

hide the date of the class from outside environment and 
providing the only necessary data and clubbing  both code 
and data togather.................

Encapsulation is a mechanisum,thet binds together data and 
code. for example:Bean
In bean, all the variables are private. we can't access 
that variables with the help of class object.