Oop Demystified

Learn object-oriented programming in no time with help from this easy-to-understand guide, ideal for novice and expert programmers alike. Discover why objects are so successful as the model for this type of programming and how objects are classified. Distinguish between how people see the world and how computers "see" it. Learn about attributes and methods, inheritance, polymorphism, real-world and case modeling, object-oriented programming languages, and much more. Each chapter ends with a quiz, culminating in a final exam at the end of the book so you can test your knowledge.

JIM KEOGH (Ridgefield Park, NJ) is a Columbia University Faculty member and teaches Object-oriented programming along with other computer science courses.

MARIO GIANNINI (New York, NY) is the chair of the programming track at Columbia University and has written several computer technology books for Prentice-Hall.

Introduction

xvii

CHAPTER 1 A Look at How We See the World

1

(10)

The Stuff That Stuff Is Made Of

1

(3)

Abstract Objects and Instances

2

(2)

Why an Object?

4

(1)

Inheritance

4

(3)

Why Use Inheritance?

6

(1)

Objects in the Business World

7

(2)

Real-Life Objects and Object-Oriented Programming

9

(1)

Quiz

10

(1)

CHAPTER 2 What Is a Class?

11

(16)

The Object of Objects

11

(1)

A Class

12

(7)

Defining a Class

13

(1)

Attributes

14

(2)

Methods

16

(3)

Combining a Class with a Program

19

(1)

Declaring an Instance of a Class

20

(4)

Initializing an Instance Variable

21

(1)

Accessing an Instance Variable

22

(1)

Assigning a Value to an Instance Variable from Your Program

23

(1)

Calling a Method

24

(2)

Passing Parameters

25

(1)

Using a Return Value

25

(1)

Quiz

26

(1)

CHAPTER 3 Encapsulation

27

(18)

Parts of a Program Come Together

27

(2)

What Is Encapsulation?

29

(1)

Why Use Encapsulation?

30

(1)

Protection Using Access Specifiers

30

(4)

Public Access Specifier

31

(1)

Private Access Specifier

32

(1)

Protected Access Specifier

33

(1)

Encapsulation in Action Using C++

34

(7)

Inside the Write() Member Function

35

(1)

Inside the Display() Member Function

36

(1)

Inside the main() Function

36

(2)

Protected Access Specifier in Action

38

(3)

Encapsulation in Action Using Java

41

(3)

Protected Access Specifier in Action

42

(2)

Quiz

44

(1)

CHAPTER 4 Methods and Polymorphism

45

(16)

Methods

45

(9)

Polymorphism

46

(4)

Overloading Methods

50

(1)

Polymorphism Using C++

51

(3)

Interface

54

(1)

Interface Design

54

(1)

Binding

55

(1)

Run-Time Polymorphism

55

(4)

Run-Time Polymorphism in Action

56

(3)

Quiz

59

(2)

CHAPTER 5 Inheritance

61

(26)

Inheritance: The Only Way to Program

61

(2)

The Class Hierarchy

63

(6)

Types of Inheritance

63

(4)

Choosing the Right Type of Inheritance

67

(2)

Simple Inheritance Using C++

69

(5)

Simple Inheritance Using Java

74

(2)

Level Inheritance Using C++

76

(3)

Level Inheritance Using Java

79

(3)

Multiple Inheritance Using C++

82

(2)

Multiple Inheritance Using Java

84

(1)

Quiz

85

(2)

CHAPTER 6 Abstraction

87

(12)

Abstraction: The Enforcer

87

(4)

Function vs. Functionality

89

(1)

The Power of Abstraction

90

(1)

The Abstract Method

90

(1)

Abstraction in Action

91

(6)

Errors Galore

94

(3)

Frameworks, Libraries, and Abstraction

97

(1)

Quiz

98

(1)

CHAPTER 7 Identifying and Describing Objects

99

(16)

An Object

100

(8)

Identifying Attributes

100

(1)

Describing Attributes

101

(1)

Decomposing Attributes to Data

102

(1)

Identifying Behaviors

103

(1)

Describing Behaviors

103

(5)

Class Definition and Class Diagram

108

(1)

Relationships Among Objects

108

(5)

Entity Relationship Diagram

110

(1)

Leveling Diagram

111

(2)

Quiz

113

(2)

CHAPTER 8 Real-World Modeling

115

(18)

Theory vs. the Real World

116

(7)

From Simple Beginnings

116

(1)

Object-Oriented vs. Procedural Languages

116

(1)

Behavior Problems

117

(1)

Simulation May Not Be the Objective

117

(1)

Internal Model and External Model

118

(1)

Hierarchical Problems

119

(1)

Task Oriented, Not Object Oriented

120

(1)

Self-Contained Data vs. Wide Source of Data

121

(1)

The World in Discrete Pieces

121

(1)

Do We Think in Objects?

122

(1)

OOP and Data

122

(1)

Real-World Hierarchy

123

(2)

The Morphing of a Hierarchy

123

(1)

"Is a" Problems

124

(1)

The Real-World Challenges of Object-Oriented Programming

125

(3)

Data Storage

125

(1)

Common Procedures

126

(1)

Defining Objects

127

(1)

Hierarchy

127

(1)

The Computer World vs. the Real World

128

(3)

Quiz

131

(2)

CHAPTER 9 Collaboration

133

(16)

What Is Collaboration?

133

(2)

Inside a Process

134

(1)

OOP Collaboration

135

(13)

UML Sequence Diagrams

141

(1)

Is main() a Class?

142

(1)

Student Registration

142

(1)

UML Collaboration Diagrams

143

(2)

Collaboration and Inheritance

145

(1)

Association

146

(1)

Self-Collaboration

146

(1)

Class Responsibility Collaborator

147

(1)

Quiz

148

(1)

CHAPTER 10 Case Modeling

149

(20)

About Case Modeling

149

(1)

Oh No, Not End Users

150

(1)

Gathering Requirements

151

(1)

The Interview

152

(1)

Essential Use Case

152

(2)

System Use Case

154

(1)

Business Rules

155

(2)

User Interface Diagramming

157

(3)

User Interface Flow Diagramming

157

(1)

User Interface Prototyping

158

(2)

Defining Classes from Our Designs

160

(1)

Identifying Technical Requirements

161

(1)

Change Cases

162

(1)

Project Management

162

(5)

Clients

163

(1)

Projects

163

(1)

Work Requests

164

(1)

Tasks

165

(1)

Estimation

166

(1)

Quiz

167

(2)

CHAPTER 11 Interfaces

169

(20)

Inside Interfaces

169

(2)

Interfaces Are Not Classes

170

(1)

Interface Diagrams

171

(1)

Show Me the HTML

172

(1)

A Quick Introduction to HTML

172

(1)

The HTMLSource Interface

173

(1)

The Classes, Before an Interface Is Implemented

174

(4)

Implementing Interfaces in Java and C#

178

(1)

Bringing It All Together

179

(1)

What About C++?

180

(1)

Components

181

(2)

Standard Interfaces

183

(2)

Standard Java Interfaces

183

(1)

Standard C# Interfaces

184

(1)

Ultimate Base Classes

185

(2)

Quiz

187

(2)

CHAPTER 12 Object-Oriented Programming Languages

189

(22)

A History of Computers and Programming

190

(2)

The Three Dominant Modern OOPLs

192

(17)

C++

192

(7)

Java

199

(5)

C#

204

(5)

Quiz

209

(2)

Final Exam

211

(4)

Answers to Quizzes and Final Exam

215

(18)

Chapter 1

215

(2)

Chapter 2

217

(1)

Chapter 3

218

(1)

Chapter 4

219

(1)

Chapter 5

219

(1)

Chapter 6

220

(1)

Chapter 7

221

(1)

Chapter 8

222

(1)

Chapter 9

222

(1)

Chapter 10

223

(1)

Chapter 11

224

(1)

Chapter 12

224

(1)

Answers to Final Exam

225

(8)

Classes in Java

233

(8)

Interfaces

238

(1)

Packages

238

(3)

Classes in C++

241

(6)

Constructor and Destructor

242

(1)

Member Functions

242

(1)

Inline Functions

243

(1)

Unions, Structs, and Classes

243

(1)

Objects and Functions, Copy Constructors

243

(1)

Enums Inside Classes

244

(1)

Static Members

245

(2)

Class Definitions in C#

247

(4)

Destructors and Garbage Collection

249

(1)

Assemblies

250

(1)

Index

251

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Summary

Author Biography

Table of Contents

Supplemental Materials