The book utilizes the CementJ open source project. A Java API, CementJ provides the functionality that most J2EE applications need but is not yet directly provided by the JDK specification. CementJ helps you build a strong foundation for your application, filling the gaps between the JDK and your applications. Using CementJ will help you streamline your development. CementJ binaries and source can be downloaded at http://sourceforge.net/projects/cementj/.
Another open source project on which this book relies is ProjectTrak. This planning package serves as an illustration for implementing the concepts presented in this book. ProjectTrak binaries and source can be downloaded at http://sourceforge.net/projects/projecttrak/.
Errata, example source code, and other materials related to this book can be found at http://www.dvtpress.com/javaarch/.