Wireless Java : Developing with Java 2, Micro Edition by J B. Knudsen (Springer)

The latest revolution in Java (the micro revolution) has begun within the release of J2ME. However, the revolution has just started and most of the specification is still being defined within the Java Community Process. The one part of J2ME that is available to developers is the Mobile Information Device Profile (MIDP), the specification for devices such as pagers, mobile phones, and small PDAs. This is the focus of this excellent book by Jonathan Knudsen. After a brief history of J2ME, the author introduces us to MIDlets, which are the applets of Mobile Information Devices. Comparing J2ME with J2SE, the author shows us how to leverage our Java skills to make coding for MIDP devices a breeze. Each step of the way, the author uses working code examples to demonstrate the capabilities of MIDlets. Starting with developing forms, the author explains how to interact with the user and code event handlers. He then demonstrates how to interact with servlets over the Internet using HTTP. Maintaining persistent storage, handling cookies, and programming a game interface are all demonstrated. Performance tuning, which is a critical issue on MIDP devices, is discussed. As long as we are going to be on the cutting edge, a chapter on XML is included. Security and cryptography are critical issues on MIDP devices. Knudsen is the author of "Java Cryptography" and as expected he does an excellent job with these topics.
All of this information is well covered in a concise 175 pages.
(Thomas Paul - bartender, July 2001)
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