Jakarta Commons is a collection of generally unrelated but useful classes that can be incorporated into any Java project. In general, the documentation available is limited at best and in some cases is limited to little more than the Javadoc from the API. This lack of good documentation has helped to prevent the widespread acceptance of the Commons classes. This book will help to address that major shortcoming of the Jakarta Commons.
This book is an introduction to the most commonly used classes found in Jakarta Commons. Not all the components are covered. For example, Betwixt, Jelly, Jexl, and Codec are barely mentioned. However, the components that the author discusses are the most useful and are generally well covered. The book starts off slowly with an introduction to Jakarta Commons and then a brief and incomplete look at the Lang component. This chapter will give you no more than a flavor of what is available. The Logging component is well covered although I would probably never use it and the coverage of the Validator component should have concentrated solely on implementation outside of Struts and left Struts explanations to books on Struts. The remaining chapters cover the more useful components including Digester, Pooling, BeanUtils, and FileUpload and do a great job of explaining the components and providing realistic examples of usage.
Anyone who is writing Java code should be interested in the Jakarta Commons and anyone who is interested in Jakarta Commons should have a copy of this book. It will serve both as a good introduction to Commons components and a reference to using those components.
This earned 4 stars on Amazon. The book is published by Apress.
The review can be seen on Amazon on My Amazon Reviews page.