Missing two of the most important projects

Two of the most important projects are not introduced in this book except in the "Other Project" chapter where the information you can get from Jakarta Commons website is better and clearer.

The two projects are:
Validator - a must for almost every Java developer. Who doesn't do validations? This project provides useful validations such as email address and credit card numbers. More importantly, it allows us to define validation rules in XML format.

Digester - also a must for anyone who needs to parse XML configuration files or rule files. Very handy. No need to use SAX directly anymore.

I also found that other projects that enjoy a chapter in the book are not explained better than from Jakarta Commons Website. For example, the Lang project. I learned more from the Jakarta Commons website in an hour than from the book.

To summarise, this book is really disappointing and not worth the money.

Other Reviews

• skip this one it only scratches the surface.
• Missing two of the most important projects
• description with api
• worth checking out the new classes