1. Compile time polymorphism - It is achieved by
overloading functions and operators
2. Run time polymorphism - It is achieved by overriding
Lets say you have a class that have many Load methods having
different parameters, this is called Compile time
polymorphism. Lets take another example where you have a
virtual method in the base class called Load with one
parameter and you have redefined its functioanlity in your
sub class by overriding base class Load method, this is
called Run time polymorphism.
Followings are the feature of OOPS:
OBJECT:- IS THE INSTANCE OF CLASS
CLASS:- IS THE TEMPLATE OF OBJECT i.e, class contain object
ABSTRACTION:- IS WAY TO REPRESENT THE ESSENTIAL INFORMATION,
WITHOUT SHOWING THE HIDDEN DETAILS. FR EX:- WORKING OF ANY
ELECTRICAL APPLIANCE WE ARE NOT FAMILIAR WITH THE HIDDEN OR
THE INTRINSIC WORKING OF THE APPLIANCE BUT WE KNOW HOW TO
OPERATE IT. BUY PRESS BUTTON. WE KNOW THE OUTCOME OF THAT
MACHINE NOT THE INTERNAL WORKING OF IT.
ENCAPSULATION:- IS THE WAY OF HIDING THE DATA. OR IN OTHER
WORDS EVERYONE IS NOT ABLE TO RETRIEVE THE DATA.
POLYMORPHISM:-IS GENERALLY USED FOR OVERLOADING.
POLYMORPHISM ARE OF TWO TYPES:
COMPILE TIME POLYMORPHISM, RUN-TIME POLYMORPHISM
INHERITANCE:- IS THE WAY, Via. WHICH CHILD OR SUB CLASS CAN
EXTENDS THE ALL METHODS AND FUNCTION OF THE SUPER OR PARENT
CLASS. HERE PARENTS OR SUPER CLASS IS THE CLASS BY WHICH THE
SUB CLASS GET INHERITED. FR EX.. THE VERY OBVIOUS EXAMPLE IN
REAL LIFE, A RELATION OF PARENT AND CHILD.
MESSAGE COMMUNICATION:- MESSAGE COMMUNICATION IS GENERALLY
USED WHEN OBJECT WANTS TO COMMUNICATE WITH EACH OTHER..