OOP Principles
This document discusses the principles of object-oriented programming (OOP). It outlines the four major OOP principles: data abstraction, encapsulation, inheritance, and polymorphism. Data abstraction involves modeling real-world objects, encapsulation keeps data and functions together, inheritance allows child classes to inherit attributes and behaviors from parent classes, and polymorphism allows classes to share a common interface but have different implementations. The document also lists the five major design principles for OOP: single responsibility, open/closed, Liskov substitution, interface segregation, and dependency inversion. It provides examples to illustrate inheritance, polymorphism, and the Liskov substitution principle in the context of eating hamburgers and drinking beverages.
![4 Major Principles for OOP
Polymorphism
[Eat] eat(void)
[Eat] eat(withBeverage)
[Eat] eat(withSnack)
Just eat!
Call eat action!
But
[Eat] …….](https://image.slidesharecdn.com/oopprinciples1-140728065207-phpapp02/85/OOP-Principles-10-320.jpg)
OOP Principles
- 1. OOP Principles I like a hamburger!
- 5. What is the “Principles”? ● Guidelines for the best way! ● Use to define a word! ● Prevent to mistake! ● etc.
- 6. Principles for OOP 4 Major Principles for OOP 5 Major Design Principles for OOP S. O. L. I. D Data Abstraction Encapsulation Inheritance Polymorphism
- 7. 4 Major Principles for OOP Data Abstraction Hamburgers Beverage FOOD
- 8. 4 Major Principles for OOP Encapsulation Just eat! Call eat action!
- 9. 4 Major Principles for OOP Inheritance Parent Child Child
- 10. 4 Major Principles for OOP Polymorphism [Eat] eat(void) [Eat] eat(withBeverage) [Eat] eat(withSnack) Just eat! Call eat action! But [Eat] …….
- 11. 5 Major Design Principles for OOP SRP (Single Responsibility Principle)SETSET But !! I want to drink a orange juice!
- 12. Straw 5 Major Design Principles for OOP OCP (Open Closed Principle) Opened Closed
- 13. 5 Major Design Principles for OOP LSP (Liskov Substitution Principle) We can eat all hamburgers because contains "Eater Action"! And all action is true! Just eat!!! eat eat eat
- 14. 5 Major Design Principles for OOP ISP (Interface Segregation Principle) DRINK + EAT DRINK EAT Not bad!
- 15. 5 Major Design Principles for OOP DIP (Dependency Inversion Principle)
- 16. Q / A
- 17. Thanks to - MCDoxxld in America - BHX in Korea