Martin Bond is a software designer and Java developer who, since 1995, has worked primarily as a trainer, course writer, and technical author specializing in Unix, C, C++, Java, and software design. Martin has written training courses on Unix, XML, Java, and Solaris Security. Debbie Law started on compiler development for parallel processing systems, later working on the design and development of client server applications. She writes books, training material, and technical papers to pay the bills and for fun, maintains part of the Web site of a major UK charity. The authors of this book work for Content Master, a technical authoring and consultancy company specializing in developing technical content. For more information please visit www.contentmaster.com. Previously the authors contributed to Sams Teach Yourself J2EE in 21 Days, published in 2002.