J2Me in a Nutshell

O'Reilly's J2ME in a Nutshell is as definitive a reference to the heart of the J2ME platform as the classic Java in a Nutshell is for the Standard Java platform. Its solid introduction to J2ME covers the essential APIs for different types of devices and deployments; the profiles (specifications of the minimum sets of APIs useful for a set-top box, wireless phone, PDA, or other device); and the Java virtual machine functions that support those APIs. The meat of the book is its classic O'Reilly-style quick reference to all the core Micro Edition classes.

Kim Topley has more than 25 years experience as a software developer and was one of the first people in the world to obtain the Sun Certified Java Developer qualification. He is a freelance Java developer based near London, England and is the author of Core JFC and Core Swing, from Prentice-Hall.

Preface

ix

Part I: Introduction to the Java 2 Micro Edition Platform API

Introduction

3

(8)

What Is the J2ME Platform?

3

(5)

J2ME Specifications

8

(1)

J2ME and Other Java Platforms

9

(2)

The Connected Limited Device Configuration

11

(33)

The CLDC Java Virtual Machine

11

(8)

The CLDC Class Libraries

19

(9)

KVM Debugging

28

(5)

Advanced KVM Topics

33

(11)

The Mobile Information Device Profile and MIDlets

44

(40)

MIDP Overview

44

(4)

The MIDP Java Platform

48

(1)

MIDlets and MIDlet Suites

49

(7)

MIDlet Execution Environment and Lifecycle

56

(4)

Developing MIDlets

60

(15)

Delivery and Installation of MIDlets

75

(9)

MIDlet User Interfaces

84

(56)

User Interface Overview

85

(4)

The High-Level User Interface API

89

(51)

The Low-Level MIDlet User Interface API

140

(41)

The Canvas Class

140

(4)

Painting and the Graphics Class

144

(1)

Graphics Attributes

145

(3)

Drawing Lines and Arcs

148

(7)

Translating the Graphics Origin

155

(1)

A Simple Animation MIDlet

156

(4)

The Graphics Clip

160

(3)

Rendering Text

163

(5)

Images

168

(5)

Event Handling

173

(5)

Multithreading and the User Interface

178

(3)

Wireless Java: Networking and Persistent Storage

181

(49)

A Networking Architecture for Small Devices

182

(3)

Sockets

185

(5)

Datagrams

190

(5)

HTTP Connections

195

(15)

Persistent Storage

210

(20)

The Connected Device Configuration and Its Profiles

230

(12)

The CDC

230

(12)

J2ME Command-Line Tools

242

(25)

cvm: The Connected Device Configuration Virtual Machine

242

(5)

kdp: The KVM Debug Proxy

247

(2)

kvm: The Kilobyte Virtual Machine

249

(3)

midp: The MID Profile Execution Environment

252

(4)

emulator: The J2ME Wireless Toolkit Emulator

256

(3)

preverify: The KVM Class Preverifier

259

(3)

MakeMIDPApp: JAD to PRC Conversion Tool

262

(2)

MEKeyTool: Public Key Certificate Management Tool

264

(3)

J2ME Programming Environments

267

(45)

The J2ME Wireless Toolkit

268

(14)

MIDP for PalmOS

282

(10)

J2ME and Forte For Java

292

(6)

Other Integrated Development Environments

298

(5)

Part II: API Quick Reference

How to Use This Quick Reference

303

(9)

J2ME Packages and Classes

312

(26)

J2ME Packages

312

(1)

J2SE Packages Not Present in J2ME

313

(1)

J2ME Package Contents

314

(24)

The java.io Package

338

(13)

The java.lang Package

351

(23)

The java.util Package

374

(11)

The javax.microedition.io Package

385

(11)

The javax.microedition.lcdui Package

396

(26)

The javax.microedition.midlet Package

422

(3)

The javax.microedition.rms Package

425

(9)

Class, Method, and Field Index

434

(9)

Index

443

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Summary

Author Biography

Table of Contents

Supplemental Materials