JON THOMAS is a senior software engineer for ScriptSave, where he creates and adopts a variety of patterns for building and testing Java applications. He was also a contributor to the bestselling book Java Tools for Extreme Programming (Wiley).

MATTHEW YOUNG is the senior Java architect at HealthTrio in Tucson, Arizona. He champions the causes of UML, the Agile process, and engineering process improvement.

KYLE BROWN is a senior technical staff member with IBM Software Services for WebSphere. He has published more than fifty papers and articles on software-engineering topics, including database patterns.

ANDREW GLOVER is CTO for Vanward Technologies and specializes in building automated testing frameworks for Java and a variety of other platforms.