ObjectOriented Software Design ObjectOriented Concept Introduction to ObjectOriented

Object-Oriented Software Design • Object-Oriented Concept • Introduction to Object-Oriented Software Design

Object-Oriented Concept • Object & Class • Inheritance (การสบทอด ( • Polymorphism • Encapsulation • Class Relationship

Introduction to Object-Oriented Software Design

Object-Oriented Concept • • • Object & Class Inheritance Polymorphism Encapsulation Class Relationship

Object • • • Object World Message Method/Operation Interface Event Responsibilities

Object

Object Click ( )

Object Person Send Mail Deliver (Mail) Post Office Deliver

Object Person Buy Pepsi Sell (10 Baht, Pepsi) Vending Machine Sell

Object Move. To. Floor (3) Person Go to 3 rd floor Elevator Move. To. Floor Open Close

Class Person Somchai Somsri Somsak Somying

Class Student Somchai Somsri Somsak Somying

Class Tennis Player Paradorn Venus Marat Martina

Class Institute Social Technology Engineering Science Agricultural Technology

Class • • • Template Name Attributes Operations Responsibilities

Class Name Attributes Operations Responsibilities

Class Student. ID First. Name Last. Name Address etc… Register. For. Course Drop. Course etc. . .

Class Tennis Player First. Name Last. Name Nationality Ranking etc… Register. For. Tournament etc. . .

Class Car Reg. Number Maker Model Color etc… Accelerate Stop etc. . .

Class Airplane Plane Number Manufacturer Model etc… Take. Off Landing etc. . .

Object & Class Student Somchai Somsri Somsak Somying

Object & Class Student Somchai Somsri Somsak Somying Student. ID First. Name Last. Name Address etc… Register. For. Course Drop. Course etc. . .

Object & Class Student Somchai Somsri Somsak Somying Student 1 B 4555555 Somchai Saetung 7146 Suranivet 7 etc… Register. For. Course Drop. Course etc. . .

Student. ID First. Name Last. Name Address etc… Register. For. Course Drop. Course etc. . . Student 1 B 4555555 Somchai Saetung 7146 Suranivet 7 etc… Register. For. Course Drop. Course etc. . .

Object-Oriented Concept • • • Object & Class Inheritance Polymorphism Encapsulation Class Relationship

Inheritance Animal Cat Dog Person

Inheritance Land Vehicle Bus Truck Car

Inheritance Transaction Sales Transaction Rental Transaction Lease Transaction

Inheritance • • • Class Hierarchy Sub Class Super Class Reusability Overriding

Inheritance Land Vehicle Bus Car Truck Toyota Vios Altis Camry

Transaction trans. No trans. Date trans. Time etc… Sales Transaction trans. No trans. Date trans. Time etc… quantity. Sold… Rental Transaction trans. No trans. Date trans. Time etc… member. No… Lease Transaction trans. No trans. Date trans. Time etc… duration…

Object-Oriented Concept • • • Object & Class Inheritance Polymorphism Encapsulation Class Relationship

Polymorphism Draw. Chart(1, 2, 1, 2) Draw. Rect(1, 2, 1, 2) Draw. Chart Draw. Triangle(1, 1, 1) Draw. Chart(1, 1, 1) Draw. Circle(1) Draw. Chart(1)

Polymorphism • Add(integer, integer) • Add(string, string) • Add(string, integer) Add(1, 1) 2 n Add(“Hello”, “World”) “Hello. World” n Add(“Hello”, 2) “Hello 2” n Add(2, “Hello”) ? n

Polymorphism : Hourly. Paid. Employee calculate. Pay() : Pay. Slip get. Total. Pay() : Weekly. Paid. Employee calculate. Pay() : Monthly. Paid. Employee calculate. Pay()

Polymorphism • Overloading

Object-Oriented Concept • • • Object & Class Inheritance Polymorphism Encapsulation Class Relationship

Encapsulation • Abstraction • Information Hiding • Security

Encapsulation Student. ID: B 4555555 First. Name: Somchai Last. Name: Saetung Courses Registered: [204204], [204203] etc… Drop. Course Set. Name Get. Name etc. . .

Encapsulation Person Buy Pepsi Sell (10 Baht, Pepsi) Vending Machine Sell

Object-Oriented Concept • • • Object & Class Inheritance Polymorphism Encapsulation Class Relationship

Class Relationship • • Association Aggregation Composition Generalization

Class Relationship • Association Pilot Planes

Class Relationship • Association – Son – Father – Customer – Operator – User - Computer

Class Relationship • Composition Car Engine Seat Wheel

Class Relationship • Composition – Car – Wheel, Engine, Seat – House – Window, Roof, Door, Wall – Computer – Monitor, CPU, Keyboard – Building – Rooms – Circle – Points – Book - Chapter

Class Relationship • Aggregation Classroom Student

Class Relationship • Aggregation – Classroom – Student – Keyboard – Key – Notebook – Paper – Computer – Monitor, CPU, Keyboard

Class Relationship • Generalization Land Vehicle Bus Truck Car

Class Relationship • Generalization – Car – Mercedes-Benz, BMW, Lexus – Animal – Cat, Rat, Dog

Introduction to Object-Oriented Software Design