This book covers in detail all aspect of J2ME, Web services, PDA, and cellular phone
application development. The book is divided into these five parts:
■ Part I: J2ME Basics
■ Part II: J2ME User Interface
■ Part III: J2ME Data Management
■ Part IV: J2ME Personal Information Manager Profile
■ Part V: J2ME Networking and Web Services

1 J2ME Overview . . . .

2 Small Computing Technology . . .

3 J2ME Architecture and Development Environment . . .

4 J2ME Best Practices and Patterns . . .

Topics covered by this e-book are..

Part 2: Introduction to Bluetooth and J2ME

Part 1: Introduction to Bluetooth and J2ME

Web Services using kSOAP

J2ME PDA Optional Packages – File Connection

Introduction to the J2ME Cousin iAppli Java

Developing Applications for Palm Devices Using WebSphere Micro Environment

Kick Start J2ME Development with BlackBerry

J2ME and Unicode

PHP Interacting with J2ME

J2ME - Using Ant with J2ME

J2ME - Considerations for Mobile Game Development

Working wirh J2ME

by Dan Moore

Table of Contents

Introduction
The Problem
A Solution

Pros and Cons of Cell Phones
Why J2ME

Overall Architecture
Technology Stack

Client Technology
The Server Side
Development Tools

Rolling Out The Application

Jar file size
Scalability

In Conclusion

This book introduces, shortly & effectively, the Java 2 Micro Edition (J2ME), the Java edition for small devices. The J2ME is divided into configurations and profiles. A configuration is designed for a specific kind of device based on memory constraints and processor power. A profile is more specific than configuration. The profile is based on a configuration and adds more APIs to it. This book concentrates upon the CLDC configuration (for very small devices) and the MIDP profile (designed for mobile information devices, such as mobile telephones).

Java 2 Micro Edition (J2ME) combines a resource-constrained JVM and a set of
Java APIs for developing applications for mobile devices.
This article is the first in a series. This time, after a quick introduction
to J2ME, I will provide a step-by-step guide to creating J2ME applications,
also known as MIDlets, using a simple example. This will cover how to
test and deploy these MIDlets as well. Finally, I will round out this installment
with a look at the lifecycle of a MIDlet.

Before you start running
your first Java program on your mobile device, we assume that you have java
installed on your PC and you have downloaded J2ME from the sun site and
installed it on your harddisk.

This book is about programming with J2ME on wireless devices with focus on developing games. It is assumed you have some knowledge and programming experience with J2ME and J2SE. The book does not go into detail on topics like how to make high level GUI menu but does demonstrate what a game menu might look like. Nor will it explain in detail how to use the Record Management System (RMS), but will go over topics that use RMS such as high score and game settings. As well a knowledge and experience with threading will be an asset before proceeding with game development.

To develop applications using wireless Java technology, you'll need to
assimilate information from several fields. You'll need to understand
something about wireless communications technology, the business of
wireless communications, and a lot about the Java platform. Where
should you begin? This page contains a high-level overview of wireless
Java technology and many links to detailed information about specific
subjects.