Java 2 Certification Exam Guide... | Buy

Introduction

(1)

What This Book Is All About

(1)

What Does It Mean to Become Sun Certified in Java

(1)

Why Use ``Java Certification for Programmers and Developers'' to Prepare for the Exams

(1)

Where Else Can You Go to Prepare for the Test

(2)

What Should You Know Before You Start Studying

(1)

Exercise 0.1

(1)

What Is Barry's Background

(1)

What Is William's Background

(2)

How Is This Book Organized

(2)

What Do You Do Once You're Ready to Take the Test

(1)

Onward

(1)

Answers to the Exercises

(2)

Exercise 0-1

(2)

Part I STUDYING FOR THE PROGRAMMER'S EXAM

(396)

Taking the Programmer Exam

(16)

What Is the Programmer Exam Like

(1)

What's on the Exam

(4)

Declarations and Access Control

(1)

Flow Control and Exception Handling

(1)

Garbage Collection

(1)

Language Fundamentals

(1)

Operators and Assignments

(1)

Overloading, Overriding Runtime Type, and Object Orientation

(1)

Threads

(1)

The java.awt Package---Layout

(1)

The java.lang Package

(1)

The java.util Package

(1)

How Does the Text Map to the Programmer's Exam Objectives

(1)

How the Test Is Administered

(1)

How to Sign Up and Take the Exams

(2)

Test-Taking Tips for the Programmer Exam

(5)

What the Test Looks Like

(1)

Be Careful

(1)

Take Your Time and Answer the Easy Ones First

(1)

Beware of Tricks

(1)

Understand Why the Question Is on the Test

(1)

Know Your Test Center

(1)

What Happens When You're Done

(1)

Sun's Take on Certification

(1)

How Sun Manages the Certification Process

(1)

Where Certification Is Heading

(1)

Java Programming Essentials

(48)

Objectives for This Chapter

(1)

Object-Oriented Relationship Using ``Is a'' and ``Has a''

(3)

Exercise 2-1

(1)

Exercise 2-2

(1)

Review: Classes, Variables, and Methods

(6)

Classes

(1)

Member Variables

(1)

Member Methods

(1)

Packages

(1)

Access Control

(2)

Reuse Names

(1)

Sharing Classes Between Applications

(1)

Creating a Package

(4)

Exercise 2-3

(1)

Exercise 2-4

(1)

Class Keywords

(4)

public

(1)

abstract

(2)

final

(1)

Exercise 2-5

(1)

Exercise 2-6

(1)

Ordering of a Java Source File

(1)

Exercise 2-7

(1)

Variable and Method Keywords

(2)

static

(1)

abstract

(1)

final

(1)

synchronized

(1)

native

(1)

transient

(1)

volatile

(1)

Exercise 2-8

(1)

Access Control Keywords

(1)

public

(1)

private

(1)

protected

(1)

Exercises

(5)

Exercise 2-9

(1)

Exercise 2-10

(1)

Exercise 2-11

(1)

Exercise 2-12

(1)

Exercise 2-13

(1)

Exercise 2-14

(1)

Exercise 2-15

(2)

Exercise 2-16

(1)

Casting Classes

(2)

Interfaces

(4)

How to Clone Objects

(1)

Static Initializers

(1)

Exercise 2-17

(1)

Answers to the Exercises

(9)

Exercise 2-1

(1)

Exercise 2-2

(1)

Exercise 2-3

(1)

Exercise 2-4

(1)

Exercise 2-5

(1)

Exercise 2-6

(1)

Exercise 2-7

(1)

Exercise 2-8

(1)

Exercise 2-9

(1)

Exercise 2-10

(1)

Exercise 2-11

(1)

Exercise 2-12

(1)

Exercise 2-13

(1)

Exercise 2-14

(1)

Exercise 2-15

(1)

Exercise 2-16

(1)

Exercise 2-17

(1)

Exercise 2-18

(1)

Exercise 2-19

(1)

Review Questions

(2)

Answers to the Review Questions

(2)

Keywords and Constructors

(24)

Objectives for This Chapter

(1)

An Alphabetical List of the Keywords

(1)

Organizing Classes

(1)

Defining Classes

(1)

Keywords for Classes and Members

(2)

Simple Data Types

(1)

Values and Variables

(1)

Exception Handling

(1)

Instance Creation and Testing

(1)

Control Flow

(2)

Exercises

(1)

Exercise 3-1

(1)

Exercise 3-2

(1)

Exercise 3-3

(1)

The Default Constructor

(1)

Defining, Overloading, and Overriding a Constructor

(2)

Invoking Another Constructor

(2)

Exercise 3-4

(1)

Exercise 3-5

(1)

Exercise 3-6

(1)

Answers to the Exercises

(2)

Exercise 3-1

(1)

Exercise 3-2

(1)

Exercise 3-3

(1)

Exercise 3-4

(1)

Exercise 3-5

(1)

Exercise 3-6

(1)

Review Questions

(3)

Answers to Review Questions

101

(2)

Memory and Garbage Collection

103

(20)

Objectives for This Chapter

104

(1)

Garbage Collection

105

(2)

When Does an Object Become Eligible for Garbage Collection

105

(1)

Invoking the Garbage Collector

106

(1)

Finalization

107

(3)

Exercise 4-1

108

(1)

Exercise 4-2

108

(1)

Accessing Members

109

(1)

Exercise 4-3

110

(1)

Passing Parameters to a Method

110

(5)

Exercise 4-4

115

(1)

What's Not on the Test---Forcing Garbage Collection

115

(1)

Answers to the Exercises

116

(7)

Exercise 4-1

116

(1)

Exercise 4-2

117

(1)

Exercise 4-3

117

(1)

Exercise 4-4

117

(6)

Data Types and Values

123

(16)

Objectives for this Chapter

124

(1)

Data Types

124

(5)

Default Values

125

(1)

Literals and String Literals

126

(1)

Character Values

126

(1)

Floating-Point Arithmetic

127

(1)

Casting

128

(1)

Exercises

129

(1)

Exercise 5-1

129

(1)

Exercise 5-2

129

(1)

Exercise 5-3

129

(1)

Arrays

130

(1)

Initializing an Array When It Is Allocated

131

(4)

Exercise 5-4

132

(1)

Arrays of Arrays

132

(2)

Where Arrays Fit into the Class Hierarchy

134

(1)

Answers to the Exercises

135

(2)

Exercise 5-1

135

(1)

Exercise 5-2

135

(1)

Exercise 5-3

136

(1)

Exercise 5-4

136

(1)

Review Questions

137

(1)

Answers to the Review Questions

138

(1)

Operators

139

(24)

Objectives for This Chapter

140

(1)

Operators

141

(4)

Arithmetic Operators

141

(1)

Assignment Operators

142

(1)

Comparison Operators

142

(1)

Logical Operators

143

(2)

Bitwise Operators

145

(5)

The >> Operator

146

(1)

The >>> Operator

147

(1)

The << Operator

148

(1)

The &, | and ^ Operators

149

(1)

Exercises

150

(1)

Exercise 6-1

150

(1)

Testing for an Object's Class Type

151

(1)

Exercise 6-2

152

(1)

Equals() and ==

152

(2)

Exercise 6-3

154

(1)

Exercise 6-4

154

(1)

Operator Precedence and Evaluation Order

154

(2)

Answers to the Exercises

156

(7)

Exercise 6-1

156

(1)

Exercise 6-2

157

(1)

Exercise 6-3

158

(1)

Exercise 6-4

158

(5)

Control Flow

163

(16)

Objectives for This Chapter

164

(1)

Nested Loops

164

(2)

Labels

166

(2)

Exercise 7-1

167

(1)

Nested if and else Statements

168

(1)

Legal Values for if Statements

169

(1)

Exercise 7-2

169

(1)

Switch and Case Statements

170

(2)

While and Do-While Statements

172

(1)

Using && and ||

172

(2)

Exercise 7-3

173

(1)

Answers to the Exercises

174

(5)

Exercise 7-1

174

(1)

Exercise 7-2

174

(1)

Exercise 7-3

174

(5)

Exceptions

179

(26)

Objectives for This Chapter

180

(1)

Exception Basics

180

(7)

Working with Exceptions

181

(4)

Exercise 8-1

185

(1)

Common Java Exceptions

185

(2)

Using Methods Defined by Exception and Throwable

187

(1)

Rethrowing an Exception

187

(2)

Exercise 8-2

188

(1)

Which Exceptions a Method Can Throw

189

(1)

Exceptions in an Overriding Method in a Subclass

190

(2)

Exercise 8-3

191

(1)

Creating and Throwing an Exception

192

(1)

Exercise 8-4

192

(1)

Answers to the Exercises

193

(12)

Exercise 8-1

193

(1)

Exercise 8-2

194

(1)

Exercise 8-3

195

(1)

Exercise 8-4

196

(9)

Methods

205

(16)

Objectives for This Chapter

206

(1)

Defining a Method

206

(1)

Overloading a Method

207

(2)

Exercise 9-1

209

(1)

Overriding a Method

209

(4)

Access Control

210

(1)

Other Keywords

211

(1)

Return Types

211

(1)

Parameter Types

211

(1)

Exceptions

212

(1)

Exercise 9-2

212

(1)

Object References to Base and Derived Classes

213

(2)

Declaring Native Methods

215

(1)

Answers to the Exercises

216

(1)

Exercise 9-1

216

(1)

Exercise 9-2

216

(1)

Review Questions

217

(1)

Answer to the Review Questions

218

(3)

Essential java.lang and java.util

221

(32)

Objectives for This Chapter

222

(1)

Wrapper Classes

222

(5)

The Boolean Class

223

(1)

The Character Class

224

(1)

The byte, short, integer, and long Classes

224

(1)

The float and double Classes

225

(1)

Using Wrapper Classes

225

(2)

Exercise 10-1

227

(1)

Working with the Math Class

227

(4)

abs()

227

(1)

ceil()

227

(1)

floor()

228

(1)

max()

229

(1)

min()

229

(1)

random()

229

(1)

round()

229

(1)

sqrt()

230

(1)

sin()

230

(1)

cos()

231

(1)

tan()

231

(1)

Exercise 10-2

231

(1)

The String and StringBuffer Classes

231

(8)

String Operators

231

(1)

The Immutability of Strings

232

(2)

Methods of the String Class

234

(3)

Exercise 10-3

237

(1)

String Buffers

237

(1)

Exercise 10-4

238

(1)

Collections

239

(5)

Overview of the Collections API

239

(3)

Collection API Essentials

242

(2)

Answers to the Exercises

244

(9)

Exercise 10-1

244

(1)

Exercise 10-2

245

(1)

Exercise 10-3

245

(1)

Exercise 10-4

245

(8)

Input/Output

253

(24)

Objectives for This Chapter

254

(1)

The java.io Package

255

(7)

InputStream and OutputStream

255

(2)

FilterInputStream and FilterOutputStream

257

(2)

DataInput and DataOuput

259

(1)

Reader and Writer

260

(2)

The File Class

262

(6)

Testing to See if a File Exists

263

(1)

Finding Information about a File Node

263

(1)

Deleting and Renaming Files

263

(1)

Creating Directories

263

(1)

Navigating the File System

264

(1)

Creating Files

264

(1)

Exercise 11-1

265

(1)

Creating Temporary Files

265

(1)

Writing to and Reading from Files

266

(2)

Exercise 11-2

268

(1)

RandomAccessFiles

268

(2)

File Descriptors

270

(2)

Exercise 11-3

271

(1)

Answers to the Exercises

272

(1)

Exercise 11-1

272

(1)

Exercise 11-2

272

(1)

Exercise 11-3

273

(1)

Review Questions

273

(2)

Answers to the Review Questions

275

(2)

Passing Arguments to Programs

277

(20)

Objectives for This Chapter

278

(1)

The main() Method

278

(2)

Command-Line Arguments

280

(2)

Exercise 12-1

281

(1)

When main() Ends

282

(1)

Embedding an Applet in an HTML Page

282

(2)

Passing Parameters to an Applet

284

(1)

Retrieving Parameters

285

(2)

Exercise 12-2

287

(1)

Customizing an Applet

287

(4)

Answers to the Exercises

291

(2)

Exercise 12-1

291

(1)

Exercise 12-2

291

(2)

Review Questions

293

(1)

Answers to the Review Questions

294

(3)

Threads

297

(32)

Objectives for This Chapter

298

(1)

An Overview of Threads

298

(5)

Thread States

299

(1)

Thread Life Cycles

300

(2)

Thread Scheduling and Priorities

302

(1)

Creating Threads with java.lang. Thread and java.lang.Runnable

303

(5)

Subclassing Thread

303

(2)

Implementing Runnable

305

(2)

Exercise 13-1

307

(1)

Monitors and Synchronization

308

(12)

Understanding Synchronization

308

(3)

Exercise 13-2

311

(1)

Using wait(), notify(), and notifyAll()

312

(5)

Exercise 13-3

317

(1)

Managing Threads with Wait-Notify and Sleep

317

(3)

Why a Thread Might Not Execute

320

(1)

Exercise 13-4

321

(1)

Other Useful Thread Methods

321

(1)

Answers to the Exercises

321

(8)

Exercise 13-1

321

(2)

Exercise 13-2

323

(1)

Exercise 13-3

323

(1)

Exercise 13-4

323

(6)

Graphics, Components, and Layout

329

(44)

Objectives for This Chapter

330

(1)

The Abstract Windowing Toolkit (AWT)

331

(5)

Applets and AWT

331

(1)

The paint() Method

332

(1)

Repainting

333

(1)

paint() and the Graphics Class

334

(1)

Smoother Graphics

335

(1)

Drawing Using a Graphics Object

336

(8)

drawString()

337

(1)

drawLine()

338

(1)

drawRect() and fillRect()

338

(3)

drawPolygon() and fillPolygon()

341

(1)

drawArc() and fillArc()

341

(2)

drawimage()

343

(1)

Exercise 14-1

344

(1)

The Image Class

344

(1)

How Java Arranges Components within Containers

345

(1)

The Component Class, Subclasses and Methods

346

(6)

TextArea

346

(2)

TextField

348

(2)

List

350

(1)

Exercise 14-2

350

(2)

Key Component Methods

352

(4)

setEnabled

352

(1)

getSize/setSize

353

(1)

setVisible

353

(1)

setForeground/setBackground

354

(1)

Components and Layout Managers

355

(1)

Using Layout Managers

356

(11)

FlowLayout

356

(4)

BorderLayout

360

(4)

GridLayout

364

(2)

Other Types of Layout Managers

366

(1)

Default Layout Managers

367

(2)

Exercise 14-3

368

(1)

Answers to the Exercises

369

(3)

Exercise 14-1

369

(1)

Exercise 14-2

369

(1)

Exercise 14-3

369

(3)

Answers to the Review Questions

372

(1)

Events

373

(24)

Objectives for This Chapter

374

(1)

Event Classes

374

(2)

Listening for Events

376

(3)

The Listener Interfaces

379

(4)

ActionListener

379

(1)

AdjustmentListener

380

(1)

ComponentListener

380

(1)

ContainerListener

380

(1)

FocusListener

381

(1)

ItemListener

381

(1)

KeyListener

381

(1)

MouseListener

382

(1)

MouseMotionListener

382

(1)

TextListener

382

(1)

WindowListener

383

(1)

Implementing a Listener Interface

383

(1)

Exercise 15-1

384

(1)

Semantic and Low-Level Events

384

(2)

AdjustmentEvent

385

(1)

ItemEvent

386

(1)

AWTEvent Subclasses

386

(4)

AWTEvent

387

(1)

ActionEvent

387

(1)

AdjustmentEvent

387

(1)

ComponentEvent

387

(1)

ContainerEvent

388

(1)

FocusEvent

388

(1)

InputEvent

388

(1)

ItemEvent

388

(1)

KeyEvent

389

(1)

MouseEvent

389

(1)

PaintEvent

389

(1)

TextEvent

389

(1)

WindowEvent

390

(1)

Exercise 15-2

390

(1)

Extending Adapter Classes

390

(2)

Exercise 15-3

392

(1)

Answers to the Exercises

392

(4)

Exercise 15-1

392

(1)

Exercise 15-2

393

(1)

Exercise 15-3

393

(3)

Answers to the Review Questions

396

(1)

Inner Classes

397

(12)

Objectives for This Chapter

398

(1)

Inner Classes

398

(4)

Creating Inner Classes

398

(4)

Anonymous Classes

402

(1)

Static Inner Classes

402

(2)

Exercise 16-1

403

(1)

Answers to the Exercises

404

(5)

Exercise 16-1

404

(5)

Part II STUDYING FOR THE DEVELOPER'S EXAM

409

(146)

The Developer Exam Roadmap

411

(12)

A Quick Overview

412

(1)

Concepts You Should Know Before Getting Started

413

(1)

The Programming Assignment

414

(3)

The Essay Exam

417

(1)

How to Sign Up for and Take the Exams

418

(2)

How to Acquire the Programming Assignment for the Developer Test

420

(1)

Strategies for Approaching the Developer Assignment

421

(2)

Developing With Java

423

(32)

Objectives for This Chapter

424

(1)

Styles and Conventions

425

(1)

Identifiers

425

(1)

Comments

426

(1)

Error Handling

426

(2)

Java's Documentation Problem

428

(4)

javadoc

429

(1)

Helping javadoc

429

(3)

javadoc Tags

432

(5)

Variables

432

(3)

Classes

435

(1)

Methods

436

(1)

Rules for Using javadoc Comments and Tags

437

(1)

Examples of javadoc Comments and Tags

438

(2)

Abstract Classes

440

(2)

Interfaces

442

(1)

Grouping Behavior

442

(1)

Enforcing Your API

442

(1)

Identifying Intent

443

(1)

Exercise 18-1

443

(1)

Packages

443

(3)

Creating Packages

443

(1)

Restricting Access

444

(1)

Defining Subsystems

445

(1)

Exercise 18-2

446

(1)

Defining Access Methods

446

(4)

Exercise 18-3

449

(1)

Answers to the Exercises

450

(2)

Exercise 18-1

450

(1)

Exercise 18-2

450

(1)

Exercise 18-3

451

(1)

Review Questions

452

(1)

Answers to the Review Questions

453

(2)

Accessing and Managing Databases

455

(30)

Objectives for This Chapter

456

(1)

Create Your Own Databases

457

(3)

Accessing Databases from Multiple Clients

460

(1)

Two-Tiered and Three-Tiered Architectures

461

(1)

Using Java APIs

462

(1)

Remote Method Invocation (RMI)

462

(1)

Defining a Remote Interface

463

(1)

Defining a Remote Class

464

(5)

Defining the Class, Interface, and Constructor

465

(2)

Installing the Security Manager and Registering the Bootstrap-Naming Service

467

(2)

Invoking Remote Objects

469

(4)

Stubs and Skeletons

471

(1)

Getting Things Going

472

(1)

Exercise 19-1

472

(1)

Java Database Connectivity (JDBC)

473

(4)

The Need for Drivers

473

(1)

Using Open Database Connectivity (ODBC)

474

(1)

Opening a Connection to a Database

475

(1)

Interacting with a Database

476

(1)

An Example of Using ODBC with Microsoft Access

477

(3)

Exercise 19-2

479

(1)

Answers to the Exercises

480

(5)

Exercise 19-1

480

(1)

Exercise 19-2

481

(4)

Network Programming and Communication

485

(48)

Objectives for This Chapter

486

(1)

A TCP/IP Primer

486

(3)

Ports and Sockets

489

(1)

Streams

490

(1)

Designing Servers and Clients

491

(1)

Handling Multiple Clients

492

(2)

Client Issues

494

(1)

The Networking Package

495

(4)

InetAddress

496

(1)

Socket and ServerSocket

496

(3)

Internet Streams

499

(1)

Client-Server Examples

500

(1)

Writing a Single-Client Server in Java

501

(9)

server()

508

(1)

client()

509

(1)

action()

509

(1)

run() for SingleChatReceive

510

(1)

Cleaning Up

510

(1)

Writing a Multi-Client Server in Java

510

(11)

server()

516

(1)

run()

516

(1)

broadcast()

517

(1)

cleanUp()

517

(1)

The Client

517

(3)

Cleaning Up

520

(1)

Exercise 20-1

520

(1)

Exercise 20-2

521

(1)

Uniform Resource Locator (URL)

521

(1)

Answer to the Exercises

522

(9)

Exercise 20-1

522

(4)

Exercise 20-2

526

(5)

Answers to the Review Questions

531

(2)

Designing Application Interfaces

533

(22)

Objectives for This Chapter

534

(1)

Mix and Match

535

(8)

Using One Layout Manager

535

(7)

Exercise 21-1

542

(1)

Changing Your Look

543

(3)

Text

544

(1)

Font and Color

544

(1)

Replacing a Component

545

(1)

Exercise 21-2

546

(1)

Working with Frames

546

(2)

Closing the Frame

547

(1)

Making an Applet a Stand-Alone Application

547

(1)

Exercise 21-3

548

(1)

Answers to the Exercises

548

(5)

Exercise 21-1

548

(2)

Exercise 21-2

550

(2)

Exercise 21-3

552

(1)

Answers to the Review Questions

553

(2)

Part III PRACTICE EXAM

555

(102)

Sun Certified Programmer Practice Exam

557

(30)

Practice Exam Number 1

558

(1)

Questions

558

(24)

Answers to Exam Questions

582

(5)

Sun Certified Programmer Practice Exam Number 2

587

(26)

Questions

588

(20)

Answers and Explanations

608

(5)

Sun Certified Developer Practice Exam

613

(38)

The Scenario

614

(1)

The Prototype Specifications

615

(1)

The Design Completed So Far

616

(2)

The New Design

618

(1)

The Code Completed So Far

619

(6)

What You Will Add to the Code

625

(2)

The Database

625

(1)

The Server

626

(1)

The Client

626

(1)

The User Interface

627

(1)

The Protocol

627

(1)

Making a New Reservation

627

(1)

Delete a Passenger's Reservation

627

(1)

Finding a Passenger's Seat

628

(1)

Finding All Open Seats

628

(1)

Retrieving the List of Passengers

628

(1)

What the user Interface Should Look Like When You're Done

628

(4)

Updating the Passenger List

631

(1)

Final Words of Advice

632

(1)

One Possible Answer for the Client Side

633

(9)

Client.java

633

(3)

TopFrame.java

636

(1)

EdnaUI.java

636

(3)

NewPassenger.java

639

(1)

DeletePassenger.java

640

(2)

One Possible Answer for the Server Side

642

(9)

Server.java (Including ClientServerThread)

642

(6)

The Three Missing Methods from DB.java

648

(3)

The Sun-Certified Developer Practice Essay Exam

651

(6)

Part IV APPENDICES

657

(8)

The CD-ROM

659

(1)

How the CD-ROM is Organized

659

(1)

Source Code

659

(1)

Sun's JDK

660

(1)

Web Links

660

(1)

What Is JCertify

660

(1)

The Java Development Kit (JDK)

661

(1)

The Pieces of the JDK

661

(4)

The Compiler

662

(1)

The Runtime environment for Standalone Programs

663

(1)

appletviewer

663

(2)

Index

665

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Java 2 Certification Exam Guide for Programmers and Developers

Summary

Author Biography

Table of Contents

Supplemental Materials

Rewards Program