Java Programming An IS Perspective

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ISBN: 9780471196655 | 0471196657
Cover: Paperback
Copyright: 1/14/1998

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This introduction to Java programming features a business focus. It discusses what it means to be object oriented, how to structure classes, and how to write methods using Java's structured programming elements. After outlining the elements of a complete Java program, the book moves on to advanced topics such as writing event-driven GUI programs, preparing applets for the Web, one- and two-dimensional arrays, animation, and more. Files from the book will be available on the Web.

Preface

(6)

Support Files

viii

(1)

Acknowledgments

(2)

Contents

Chapter 1: Introducing Java and the Object-Oriented Paradigm

(32)

Why Java

(3)

Performing a Real-World Task

(4)

A Bit of History

(1)

Objects

(2)

Messages

(1)

Data Encapsulation

(1)

Classes

(1)

Types of Classes

(2)

A Short Introduction to Object-Oriented Development

(1)

Designing an Object-Oriented Program: A First Example

(4)

The Office Supply Inventory

(3)

Inheritance

(7)

The Office Supply Company

(2)

The Corner Pharmacy

(3)

Interface Classes and Inheritance

(2)

Some Guidelines for Defining Classes

(1)

Summary

(1)

Exercises

(4)

Chapter 2: Running Java

(22)

Java Execution Environments

(1)

Java Programming Environments

(3)

Java Class Library

(1)

Preparing a Java Program

(1)

The Anatomy of a Java Program

(12)

Class Structure

(2)

Method Structure

(1)

Overloading

(1)

Constructors

(2)

The main Method

(1)

Gaining Access to Class Libraries

(1)

Creating Objects

(2)

Calling Methods

(1)

Adding Comment Statements

(1)

Tracing the Hello Program

(1)

Summary

(1)

Exercises

(4)

Chapter 3: Variables and Data Types

(18)

Variables of Simple Data Types

(3)

Integers

(1)

Floating Point Numbers

(1)

Character Data

(1)

Booleans

(1)

Variables for Objects

(1)

Scope of Variables

(2)

Literal Values

(1)

Initializing Variables

(1)

Typecasting

(1)

String Objects

(1)

Static Variables and Constants

(1)

Data Type Classes

(1)

Summary

(1)

Exercises

(7)

Chapter 4: Writing and Using Methods (Part I)

(24)

Method Structure

(2)

Passing Arguments to Parameters

(3)

How Arguments Are Passed

(1)

Writing Simple Constructors

(1)

Data Encapsulation and Variable Access

(2)

Writing "set" Methods

(1)

Returning Values: "get" Methods

(1)

Returning Multiple Values

(4)

Performing Console I/O

(6)

Console Input

(1)

Console Output

(3)

Using the NumberFormat Class

(1)

Summary

(1)

Exercises

(5)

Chapter 5: Writing Methods (Part II)

(44)

Java Operators

(10)

Arithmetic Operators

(5)

The Increment and Decrement Operators

(1)

Performing Exponentiation

100

(1)

Using Arithmetic Operators

101

(2)

Logical Operators

103

(2)

Assignment Statement Shorthand

105

(1)

Assignment, Data Type Conversion, and Typecasting

105

(1)

Another Arithmetic Program

106

(2)

Selection

108

(6)

Using the if Statement

110

(1)

Using the switch Statement

110

(2)

Using?

112

(1)

The Currency Converter Program

113

(1)

Iteration

114

(13)

Using the while Statement

117

(1)

Using the do while Statement

118

(1)

Using the for Statement

119

(1)

The break and continue Statements

120

(1)

Iteration Example: The Hi/Lo Game

121

(2)

The Game class

122

(1)

The Application Class

123

(4)

String Manipulation

127

(7)

Creating and Assigning Values to Strings

128

(1)

Comparing Strings

128

(3)

Obtaining the Length of a String

131

(1)

Extracting Substrings

132

(2)

Summary

134

(1)

Exercises

135

(6)

Chapter 6: Inheritance

141

(24)

Where Inheritance Makes Sense

142

(3)

The Graphing Program

145

(3)

Creating Base Classes

148

(4)

Inheritance and Accessibility

149

(2)

Abstract Methods, Polymorphism, and Abstract Classes

151

(1)

Creating Derived Classes

152

(5)

Inheritance and Derived Class Constructors

156

(1)

Using Derived Classes

157

(1)

Typecasting to Base Classes

157

(2)

Interfaces

159

(1)

Summary

160

(1)

Exercises

161

(4)

Chapter 7: Event-Driven Programming and the Graphic User Interface

165

(52)

What It Means to Be Event-Driven

167

(1)

The Structure of a GUI Program

168

(3)

The Frame Hierarchy

171

(2)

Event Handling

173

(6)

Types of Events

173

(2)

Creating and Registering Listener Objects

175

(1)

Listener Methods

176

(2)

Adapters

178

(1)

Inner Classes

179

(3)

The GUI Version of the Graphing Program

182

(1)

The Top-Level Window

182

(2)

Layout Managers

184

(5)

Specifying a Layout

185

(4)

Creating Panels

189

(1)

Adding Components to a Container: Buttons and Panels

189

(2)

Making Buttons Work

191

(2)

Inner Classes and the this Variable

192

(1)

Canvases

193

(7)

Creating a Canvas

193

(1)

Adding a Canvas to a Container

193

(2)

Making a Canvas Visible

195

(1)

Removing a Canvas from a Container

195

(5)

Drawing and Filling Simple Shapes

200

(7)

Coordinate Systems for Drawing

200

(1)

Graphics Objects

201

(1)

Drawing Lines

201

(1)

Drawing Open and Filled Shapes

202

(4)

Rectangles

202

(2)

Ovals

204

(1)

Rounded Rectangles

205

(1)

Adding Color

206

(1)

Background Color

207

(1)

Working with Text

207

(3)

Creating Font Objects

208

(1)

Setting the Font for Drawing

209

(1)

Obtaining Font Information

209

(1)

Drawing the Text

210

(1)

Summary

210

(1)

Exercises

211

(6)

Chapter 8: Arrays and Vectors

217

(42)

Declaring One-Dimensional Arrays

218

(1)

Initializing Arrays

219

(1)

Using a One-Dimensional Array

220

(6)

Declaring and Allocating Space for Two-Dimensional Arrays

226

(2)

Sorting a One-Dimensional Array

228

(3)

Using a Two-Dimensional Array: The Tic-Tac-Toe Game

231

(16)

The Data Handling Class

232

(5)

Game Setup

232

(4)

Making Moves

236

(1)

Finding Winners and Ties

237

(1)

The Playing Field Window

237

(7)

The Button Panel

241

(1)

Disabling and Enabling Buttons

242

(1)

The Tic-Tac-Toe Grid Panel and Grid Layouts

242

(1)

Identifying Clicked Buttons

243

(1)

Changing Button Labels

244

(1)

The Dialog Box

244

(3)

Vectors

247

(6)

Creating Vectors

247

(3)

Adding Elements

250

(1)

Storing Numbers in Vector Elements

251

(1)

Changing Element Contents

251

(1)

Getting the Size of a Vector

251

(1)

Retrieving Data from a Vector

252

(1)

Shrinking a Vector

253

(1)

Adding Elements to and Removing Elements from the Middle of a Vector

253

(1)

Summary

254

(1)

Exercises

255

(4)

Chapter 9: Containers

259

(38)

The Survey Analysis Program

260

(9)

Declaring Arrays of Objects

269

(1)

Array Manipulation by an Array Manager

269

(4)

Sorting an Array of Objects

273

(1)

Arrays as Method Parameters

274

(1)

Using an Array Manager

275

(4)

Creating and Using Popup Menus

279

(2)

Creating Popup Menus

279

(1)

Trapping Popup Menu Events

280

(1)

Working with Hash Tables

281

(10)

Hash Keys

283

(1)

The Sample Hash Table Program

284

(1)

Creating a Hash Table

285

(4)

Adding an Element

289

(1)

Retrieving an Element Using Its Key

290

(1)

Listing Hash Table Contents

290

(1)

Summary

291

(1)

Exercises

291

(6)

Chapter 10: Applets

297

(16)

Applet Security Issues

299

(1)

Applications Versus Applets

299

(2)

A Sample Applet

301

(6)

The HTML Tag for Applets

307

(1)

Summary

308

(1)

Exercises

309

(4)

Chapter 11: Enhancing the GUI

313

(50)

The Loan Calculator Program

314

(5)

The Data Handling Classes

314

(5)

Error Messages

319

(1)

Working with Pull-Down Menus

319

(13)

Creating a Menu Bar

323

(7)

Trapping Menu Selections

330

(1)

Additional Menu Considerations

331

(1)

Implementing Scrolling Output

332

(5)

Creating and Installing Scroll Bars

332

(1)

Trapping and Performing Scrolling

333

(4)

Scrolling and Window Resizing

337

(1)

Collecting Information in Dialog Boxes

337

(11)

Adding Text Fields

338

(1)

Getting Data from a Text Field

338

(6)

The Problem with Sharing Dialog Box Data

344

(1)

Using an Interface to Send Dialog Box Data to Its Parent Window

345

(3)

Other GUI Elements for Dialog Boxes

348

(11)

Using Check Boxes

349

(6)

Using Check Box Groups (Radio Buttons)

355

(2)

Using Lists

357

(2)

Summary

359

(1)

Exercises

359

(4)

Chapter 12: File I/O and Exception Handling

363

(46)

The Stream I/O Classes

365

(2)

The Basics of Exception Handling

367

(2)

The try/catch Structure

368

(1)

Working with Sequential Files

369

(9)

Getting File Names

369

(2)

Opening File Output Streams

371

(1)

Writing to a Delimited Text File

372

(1)

Opening File Input Streams

373

(1)

Reading from a Delimited Text File

374

(2)

Dealing with Multiple Objects

376

(2)

Working with Random Access Files

378

(22)

Indexing a Random Access File

379

(2)

The Telephone Directory Program

381

(7)

Opening a Random Access File

388

(2)

Reading from a Random Access File

390

(9)

Writing to a Random Access File

399

(1)

Creating Your Own Exceptions

400

(2)

Defining a Custom Exception Class

400

(1)

Throwing the Exception

401

(1)

Summary

402

(1)

Exercises

403

(6)

Chapter 13: Images, Animation, and Threads

409

(36)

Loading Static Images

410

(5)

Loading an Image from the Local Machine

412

(1)

Loading Images Over a Network

412

(2)

Supplying a Complete URL

413

(1)

Supplying a Relative URL

413

(1)

Drawing Images

414

(1)

Using Buffering to Smooth Network Image Loading

415

(5)

Image Observers and Detecting Image Completion

415

(3)

Buffering the Image

418

(2)

MultiThreading Concepts

420

(5)

Thread Objects

421

(1)

Thread States

421

(2)

Thread Behavior

423

(1)

Thread Synchronization

423

(2)

Writing a Program with Animation

425

(8)

Creating the Animation Thread

430

(1)

Dealing with a Partially Loaded Image File

430

(1)

Starting the Animation

431

(1)

Controlling the Animation with Mouse Clicks

432

(1)

Stopping the Animation

433

(1)

Writing a Program with a Periodic Thread

433

(9)

Actions of a Timer Class

434

(6)

Actions of the Timed Object

440

(1)

An Aside: Working with Java Dates

441

(1)

Summary

442

(1)

Exercises

442

(3)

Glossary

445

(6)

Index

451

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Java Programming An IS Perspective

Summary

Author Biography

Table of Contents

Supplemental Materials