Robert W. Bill currently dedicates his time to software design and development in Python, Jython, and Java as an independent contractor. His experiences include a four-year tenure with the Minnesota Educational Computing Consortium, The Learning Company, and Mattel. Robert has studied at Baylor University, followed by various courses in music and sciences at the Eastman School of Music and the University of Wisconsin-Madison. These reviewers contributed their considerable hands-on expertise to the entire development process for Jython for Java Programmers. As the book was being written, these dedicated professionals reviewed all the material for technical content, organization, and flow. Their feedback was critical to ensuring that Jython for Java Programmers fits our reader's need for the highest quality technical information. As member of the research staff at the California Institute of Technology, Dr. Robert Brunner focuses on Knowledge Discovery and Data-Mining in very large, heavily distributed databases. He also has been a Java and XML instructor at the Center for Advanced Computing Technology operated by the California State Polytechnic University at Pomona for the last two years. Recently, he has written a series for Java Developers Journal, reviewed numerous proposals for a variety of publishing houses, and has edited texts covering Linux, C++, Java, and XML. He is currently completing Enterprise Java Database Programming to be published by Addison Wesley, Inc. John Ha is a support engineer and technical writer at NeTraverse, a software development firm in Morrisville, North Carolina. John is responsible for printed and online documentation for the firm's flagship product, Win4Lin. Win4Lin allows Microsoft Windows to be installed on a host Linux system. John also investigates distributed filesystem and remote display technologies for NeTraverse's server product currently under development. John earned his Bachelor of Arts degree in English Literature from the University of Connecticut in Storrs, Connecticut.