abstraction:
abstraction means providing the relevant information only 
and hiding other information..

encapsulation:

encapsulation means capsuling of data in the class..in 
encapsulation the data members are declared in a class.and 
we u want to use that variables only the copy of the 
variables goes there which we use in other public 
classes.this generates the concept of information hiding.
encapsulation also provide scurity to the data variables