Though primarily a reference, the book starts off with a thorough, fast-paced introduction to Java, exploring all the key topics including syntax, Object-Oriented programming, security, beans and tools. These discussions are brief and very information-dense but if you are buying this book to learn the language, you will probably be overwhelmed by the speed of this initiation.

This book intends to document quite a bit of Java and it easily succeeds with broad coverage of Java programming in Part I and API cataloguing broken down by package in Part II. For example, discussions in Part I explain types, reflection, and dynamic loading. The handling of these topics takes a little over a page but the book gives a useful overview with code examples that clearly illustrate the points made. It is one of the clearest and most concise treatments of these three topics available.

The chapters in Part II include an introduction, diagrams, and sections for each class in the package. The sections for each class can be very informative, as in the discussion of the Socket class in the java.net chapter, which includes how to instantiate a Socket object, getting I/Ostreams from the object you instantiated, and how to alter the behaviour of sockets. This discussion, like most in this book, is brief, clear and to the point.

If you are looking for a Java reference, this is a solid volume that will provide lasting value. --John Keogh

Topics covered: Part I, Introducing Java, provides broad coverage of Java programming topics, including: data types, syntax, classes and objects, Java file structure, inner classes, interfaces, packages, creating and initialising objects, destroying and finalising objects, input/output, cryptography, networking, security, threads, Java Beans, Java Doc and tools that come with Java 1.2 SDK.

Part II, the Java API Quick Reference, includes chapters on the following Java packages: java.beans, java.beans.beancontext, java.io, java.lang, java.lang.ref, java.lang.reflect, java.math, java.net, java.security, java.security.acl, java.security.cert, java.security.interfaces, java.security.spec, java.text, java.util, java.util.jar, java.util.zip, javax.crypto, javax.crypto.interfaces, javax.crypto.spec and a final chapter which provides an index for classes, methods and fields.