About the Authors

Martin Lippert, Stefan Roock, and Henning Wolf are research assistants at the University of Hamburg, and professional software architects and consultants at IT Workplace Solutions. Among their current research interests are framework design and implementation, refactoring, Java, and Extreme Programming. They are senior architects of the JWAM framework and have gathered experience with Extreme Programming techniques over the past three years. They are project coaches for Extreme Programming and software architectures and have given a number of talks, tutorials, and demonstrations on various topics of software engineering and XP at international conferences, including XP2000 and XP2001, ECOOP, ICSTest, and OOP.

Robert Tunkel is a student at the University of Hamburg and a software developer at IT Workplace Solutions.