INTRODUCTION TO
OOP
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Object-Oriented Programming: Concepts and Comparison, Study notes of Java Programming
A basic introduction to object-oriented programming (oop), contrasting it with procedural programming (pop). It highlights key oop concepts like objects, classes, abstraction, encapsulation, inheritance, polymorphism, message passing, and dynamic binding. The document also presents a table comparing pop and oop, outlining their differences in terms of program structure, data focus, approach, access specifiers, data security, and modification ease. It concludes by mentioning java as an example of an object-oriented language.
Typology: Study notes
2024/2025
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INTRODUCTION TO
OOP
Introduction to OOP
▪ Initially computer invented, binary language that is
used to write programs.
▪ Programs are large in size,difficult to write in
binary,then assembly language (not-user friendly)
introduced to write programs.
▪ Change in user requirements,size,complexity of
programs,leads to the development of (procedural
oriented program) unstructured
language (BASIC,FORTRAN).All instructions
written one after the another became difficult to trace
and debug errors.
▪ Then structured language OOP(object oriented
programming) paradigm were developed.
Difference b/w POP & OOP
POP(Procedure Oriented Programming OOP(Object Oriented Programming)
- In this programs are divided into functions( procedures ). - Programs are divided into parts known as objects.
- The main focus of POP is on the procedures. - The main focus of OOP is on data.
- It follows top-down approach. • It follows bottom-up approach.
- In this most functions use global data.POP does not have any access specifiers. - It has access specifiers such as public,private etc.
- POP does not provide any data security .. • It provides data hiding,data associated with the program,so security is provided. **- Modification is difficult. • Ease of modification.
- Eg:C,COBOL,PASCAL,FORTRAN,** BASIC etc.. - Eg:CPP,JAVA,PERL etc..
Basic Concepts of OOP
▪ Java is an Object-Oriented Language.
▪ As a language that has the Object-Oriented feature, Java supports the following fundamental concepts −