Beginning Java Objects: From Concepts to Code

by Barker, Jacquie

• ISBN13: 9781590591468
• ISBN10: 1590591461
• Edition: 4th
• Format: Paperback
• Copyright: 2003-07-01
• Publisher: Springer-Verlag New York Inc

Summary

Among Java's many attractive features as a programming language, its object-oriented nature is key to creating powerful, reusable code and applications that are easy to maintain and extend. To take advantage of these capabilities, you're going to need not only to master the syntax of the Java language, but also to gain a practical understanding of what objects are all about. Most importantly, you need to know how to structure Java applications from the ground up to make the most of objects. WithBeginning Java Objects: From Concepts to Code, youll master all three.Learning to design objects effectively with Java is the goal ofBeginning Java Objects: From Concepts to Code.Plenty of titles dig into the Java language in massive detail, but this one takes the unique approach of stepping back and looking at fundamental object concepts first. Mastery of Javafrom understanding the basic language features to building complete industrial-strength Java applicationsemerges only after a thorough tour of thinking in objects. Let this book be your guide.

Table of Contents

Introduction	p. 1
Goals for this Book	p. 1
Why Is Understanding Objects So Critical To Being a Successful OO Programmer?	p. 2
Who Is This Book Written For?	p. 3
What if You are Interested in Object Modeling, But Not Necessarily in Java Programming?	p. 5
How This Book is Organized	p. 5
Part 1	p. 5
Part 2	p. 5
Part 3	p. 5
Conventions	p. 6
Which Version of Java is this Book Based On?	p. 6
A Final Thought Before We Get Started	p. 7
Tell Us What You Think	p. 7
Student Registration System Case Study	p. 8
The ABC's of Objects	p. 11
A Little Taste of Java	p. 13
Why Java?	p. 14
Java Language Basics	p. 23
Getting 'Hands On' With Java	p. 43
Summary	p. 44
Exercises	p. 45
Abstraction and Modeling	p. 47
Simplification Through Abstraction	p. 47
Generalization Through Abstraction	p. 48
Reuse of Abstractions	p. 52
Inherent Challenges	p. 53
Summary	p. 55
Exercises	p. 56
Objects and Classes	p. 59
What Is an Object?	p. 59
Data/State/Attributes	p. 60
Behavior/Operations/Methods	p. 61
Classes	p. 63
Instantiation	p. 64
Encapsulation	p. 66
Objects vs. Database Records	p. 66
Classes as Abstract Data Types	p. 67
Instantiating Objects: A Closer Look	p. 69
Objects as Attributes	p. 73
Composite Classes	p. 74
Three Distinguishing Features of an Object-Oriented Programming Language	p. 77
Summary	p. 77
Exercises	p. 78
Object Interactions	p. 81
Events Drive Object Collaboration	p. 81
Method Signatures	p. 83
Message Passing and Dot Notation	p. 87
Accessing Attributes via Dot Notation	p. 88
Delegation	p. 89
Access to Objects	p. 90
Objects as Clients and Servers/Agents	p. 92
Information Hiding/Visibility	p. 93
Accessor and Modifier Methods	p. 96
Exceptions to the Public/Private Rule	p. 99
Encapsulation Revisited	p. 102
Constructors	p. 107
Summary	p. 109
Exercises	p. 110
Relationships Between Objects	p. 113
Associations and Links	p. 113
Rules for Deriving Classes: The 'Do's'	p. 130
Rules for Deriving Classes: The 'Don'ts'	p. 133
A Few Words About Multiple Inheritance	p. 135
Three Distinguishing Features of an Object-Oriented Programming Language, Take 2	p. 139
Summary	p. 139
Exercises	p. 140
Collections of Objects	p. 143
What are Collections?	p. 143
Inventing Your Own Collection Types	p. 153
Collections as Method Return Types	p. 156
Collections of Supertypes	p. 157
Composite Classes, Revisited	p. 158
Summary	p. 160
Exercises	p. 161
Some Final Concepts	p. 163
What is Polymorphism?	p. 164
Three Distinguishing Features of an Object-Oriented Programming Language	p. 169
Abstract Classes	p. 169
Interfaces	p. 175
Static Attributes	p. 179
Summary	p. 185
Exercises	p. 186
Object Modelling 101	p. 189
The Object Modeling Process in a Nutshell	p. 191
The 'Big Picture' Goal of Object Modeling	p. 191
Our Object Modeling Process, in a Nutshell	p. 194
Summary	p. 197
Exercises	p. 198
Formalizing Requirements through Use Cases	p. 201
What are Use Cases?	p. 202
Actors	p. 203
Specifying Use Cases	p. 207
Matching Up Use Cases with Actors	p. 208
To Diagram or Not to Diagram?	p. 209
Summary	p. 210
Exercises	p. 210
Modeling the Static/ Data Aspects of the System	p. 213
Identifying Appropriate Classes	p. 214
Producing a Data Dictionary	p. 225
Determining Associations Between Classes	p. 226
Identifying Attributes	p. 230
UML Notation: Modeling the Static Aspects of an Abstraction	p. 230
Object Diagrams	p. 241
Information 'Flows' Along the Association 'Pipeline'	p. 244
'Mixing and Matching' Relationship Notations	p. 248
Association Classes	p. 250
Our 'Completed' Student Registration System Class Diagram	p. 252
Metadata	p. 258
Comparing UML and OMT Notations	p. 259
Summary	p. 260
Exercises	p. 261
Modeling the Dynamic/Behavioral Aspects of the System	p. 263
How Behavior Affects State	p. 264
Events	p. 266
Scenarios	p. 268
Sequence Diagrams	p. 272
Using Sequence Diagrams to Determine Methods	p. 277
Collaboration Diagrams	p. 279
Revised SRS Class Diagram	p. 280
Summary	p. 281
Exercises	p. 282
Wrapping Up Our Modeling Efforts	p. 285
Testing Your Model	p. 285
A Shortcoming in our Model	p. 286
Reusing Models: A Word About Design Patterns	p. 288
Summary	p. 290
Exercises	p. 291
Translating an Object 'Blueprint' into Java Code	p. 293
A Deeper Look At Java	p. 295
Setting Up a Java Programming Environment	p. 296
Anatomy of a Java Program, Revisited	p. 297
Anatomy of a Java Class	p. 305
Strings as Objects	p. 311
Java Expressions, Revisited	p. 314
Printing to the Screen, Revisited	p. 316
Arrays, Revisited	p. 316
Java Exception Handling	p. 320
Reading Data from the Command Line	p. 322
Accepting Keyboard Input	p. 324
Using constructors	p. 326
Using the 'this' Keyword for Object Self-Referencing	p. 330
Object Deletion and Garbage Collection	p. 333
Inheritance and Java	p. 335
Java's Collection Classes	p. 343
The 'final' Keyword	p. 353
Abstract Classes and Interfaces, Revisited	p. 356
Object Identities	p. 358
The toString() Method	p. 364
Inner Classes	p. 365
Summary	p. 368
Exercises	p. 370
Transforming Your Model into Java Code	p. 375
Suggestions for Getting the Maximum Value out of This and Subsequent Chapters	p. 376
The SRS Class Diagram, Revisited	p. 376
Debugging Tip	p. 421
Summary	p. 423
Exercises	p. 424
Rounding Out Your Application, Part 1 - Adding File Persistence	p. 427
What is File Persistence?	p. 428
CollectionWrapper (Encapsulating Collections; Reading from an ASCII File)	p. 436
Summary	p. 468
Exercises	p. 469
Rounding Out Your Application, Part 2 - Adding a Graphical User Interface	p. 471
Java GUIs: a Primer	p. 472
Java Event Handling	p. 522
Selecting an Item from a JList	p. 538
More Container Types: JDialog and JOptionPane	p. 545
One Step Dialogs with JOptionPane	p. 550
SRS, Take 3: Adding a GUI	p. 553
Summary	p. 597
Exercises	p. 598
Next Steps	p. 601
Jacquie's 'Tried and True' Method for Learning Java Properly	p. 602
Recommended Reading	p. 603
Your Comments, Please!	p. 604
Appendices	p. 607
Suggestions for Using This Book as a Textbook	p. 609
Alternative Case Studies	p. 613
Conference Room Reservation System	p. 613
Blue Skies Airline Reservation System	p. 615
Setting Up a Basic Object Modeling/Java Environment	p. 619
Object Modeling Tools	p. 619
The Java Software Developer's Kit	p. 619
'Odds and Ends' Tips for Getting Java Working	p. 620
Using the On-Line Java Documentation with Windows	p. 625
Special Tips for Using DOS Under Microsoft Windows	p. 626
SRS Source Code	p. 631
Downloading the Example Code	p. 631
Note to Experienced C++ Programmers	p. 635
How Polymorphism Works	p. 641
Index	p. 651
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