2. What is OOP?
Object Oriented Programming (OOP) is a
programming technique in which programs
are written on the basis of objects.
Examples:
C++
PHP
Java
Objective-C
4. Classes(Classification Of Objects)
A class is a group of objects with same attributes
and behavior. The characteristics of a class are
:
A name
Attributes
Behaviour
5. What is Object?
• An object represents an entity in the real
world such as a person , thing or concept etc.
• An object is identified by its name. All object
have these characteristics :
Identity
State
Behaviour
11. Categories Of Inheritance
1) Single Inheritance:
In Single Inheritance, the child class inherits
all data members and member functions of
the base class.
2) Multiple Inheritance:
In Multiple Inheritance, the child class
inherits all data members and member
function of base class.
12. Types Of Inheritance
1) Public Inheritance:
In public inheritance, the access status of parent
class members in the derived class remains the
same.
• The public members of parent class become public
members of derived class.
• The private members of parent class become
private members of derived class.
• The protected members of parent class become
protected members of derived class.
13. 2) Protected Inheritance:
In protected inheritance, the access status of
parent class members in derived class is restricted.
• The public members of parent class become
protected members of derived class.
• The protected members of parent class become
protected members of derived class.
• The private members of parent class become
private members of derived class.
14. 3) Private Inheritance:
In private inheritance, the access status of parent
class members in the derived class is restricted.
• The private members of parent class become the
private members of derived class.
• The public members of parent class become the
private members of derived class.
• The protected members of parent class become the
private members of derived class.
16. Data Abstraction
Data abstraction or information hiding refers
to providing only essential information to the
outside world and hiding their background
details.
17. Advantages Of Data Abstraction
Simplification of software development.
Testing and debugging.
Reusability.
Security.
Modifications to the representation of a data
type.
19. Data Encapsulation
Data Encapsulation is an Object Oriented
Programming concept that binds together the data
and functions that manipulate the data and that
keep both safe from outside interference and
misuse.
21. What is Polymorphism?
The word polymorphism is a combination of two
words poly and morphism. Poly means many and
morphism means form.
In object-oriented programming, polymorphism is
the ability of objects of different types to respond to
functions of the same name. The user does not have
to know the exact type of the object in advance. The
behavior of the object can be implemented at run
time.