The presentation provides an overview of object-oriented programming (OOP) concepts. It discusses how OOP involves writing programs based on objects, and defines a class as a group of objects that share attributes and behaviors. An object is an instance of a class that contains all the variables and functions of that class. Key characteristics of OOP discussed include inheritance, data abstraction, encapsulation, and polymorphism. Inheritance allows new classes to inherit properties from existing classes. Data abstraction hides background details and simplifies development. Encapsulation binds data to the functions that operate on it. Polymorphism enables different types of objects to respond to the same function name. Examples of OOP languages provided are C++, PHP, and

1. Presentation on - OOPS
Presentation by-
Abhishek kumr
01234321
CSE/3rd

2. Object Oriented Programming (OOP)
is a programming technique in which
programs are written on the basis of objects.
Examples:
 C++
 PHP
 Java

3. Classes And Objects

4. A class is a group of objects with same
attributes and behavior.
A class is user define derived class that
combines both data and function and function
and manipulate the data.

5. Object is a class type variable. Objects are also called
instance of the class. Each object contains all
members(variables and functions) declared in the class :
 Identity
 State
 Behaviour

6.  Reusability
 Extensibility
 Decomposability
 Compos ability
 Understandability
 Security

7. Characteristics Of
OOP

8.  Inheritance
 Data Abstraction
 Data Encapsulation
 Polymorphism

9. Inheritance

10. A programming technique that is used to reuse
an existing class to build a new classis known as
inheritance.

11. 5 levels of inheritance -
-Single level
-Multilevel
-Multiple
-Hierarchical
-Hybrid

12. Flower
Rose
When a sub class inherit the property from only one
base class, then it is known as Single Inheritance
BASE CLASS
SUB CLASS
SINGLE INHETANE :-

13. When a sub class inherit the property from the class that itself
inherit from another class , then it is known as Multi Level
Inheritance.

14. Bird
PigeonParrot
Multiple
Base Class
Derived
When a sub class inherit the property from several base class,
then it is known as multiple inheritance.

15. B DC
A
G HFE
When several sub class inherit the property from single base class, then it is
known as hierarchical inheritance.

16. India
World
Rajasthan
Jaipur
In hybrid inheritance several inheritance forms
Are combined.

17. Data Abstraction

18. Data abstraction or information hiding refers to
providing only essential information to the outside
world and hiding their background details.

19.  Simplification of software development.
 Testing and debugging.
 Reusability.
 Security.
 Modifications to the representation of a data
type.

20. Data Encapsulation

21. 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.

22. Polymorphism

23. 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.

24.  Virtual functions.
 Operator overloading.
 Function overloading

25. Thank you