Chapter 9 Abstract Class

Chapter 9 Abstract Class & Interface Oum Saokosal , Head of IT Department National Polytechnic Institute of Cambodia Tel: (855)-12-417214 E-mail: oum_saokosal@yahoo.com

Abstract Class ,[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction (1) Today’s class is about abstract class. It sounds to me it make no sense. Do you know something about it? Well. I know it, but you know..., I‘ve never understood it until I met some problem, then I realized I needed abstract class and I knew it. I will let you know the problem.

Introduction (2) ,[object Object],[object Object],Shape -color:String +Shape() +Shape(color) +isFilled():boolean +setFilled(filled):void +getArea():double +getParimeter():double Circle -radius:double +Circle() +Circle(radius:double) +getRadius():double +setRadius(radius):void +getArea():double +getPerimeter():double Rectangle -width,height:double +Rectangle() +Rectangle(width,height) +getArea():double +getPerimeter():double

Introduction (3) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction (4) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction (5) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction (6) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction (7) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction (8) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction (9) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction (9) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction (10) ,[object Object],[object Object],[object Object],[object Object],[object Object]

What is abstract class? ,[object Object],[object Object],[object Object]

How to make a class to be abstract? (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How to make a class to be abstract? (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How to use abstract class? (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How to use abstract class? (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Importance of abstract class ,[object Object],[object Object],[object Object],[object Object]

Chapter 9 Abstract Class

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Chapter 9 Abstract Class