Marc Loy started with Java training at Sun Microsystems in the early days (shout out to HotJava!) and never looked back. He authored a number of early Java books and training courses, working with a wide variety of companies across the US, Europe and Asia along the way. For O'Reilly, Marc has served as co-author on Java Swing and Learning GNU Emacs. Currently in Ohio, Marc is a software developer and trainer specializing in user experience design and mobile applications. Patrick Niemeyer became involved with Oak (Java's predecessor) while working at Southwestern Bell Technology Resources. He is an independent consultant and author in the areas of networking and distributed applications. Pat is the author of BeanShell, a popular Java scripting language, as well as various other free goodies on the Net. Most recently, Pat has been developing enterprise architecture for A.

G. Edwards. He currently lives in the Central West End area of St. Louis with various creatures. Dan Leuck is the CEO of Ikayzo, a Tokyo and Honolulu-based interactive design and software development firm with customers including Sony, Oracle, Nomura, PIMCO and the federal government. He previously served as Senior Vice President of Research and Development for Tokyo-based ValueCommerce, Asia's largest online marketing company, Global Head of Development for London-based LastMinute.com, Europe's largest B2C website, and President of the US division of DML. Daniel has extensive experience managing teams of 150+ developers in five countries.

He has served on numerous advisory boards and panels for companies such as Macromedia and Sun Microsystems. Daniel is active in the Java community, is a contributor to BeanShell, the project lead for SDL, and sits on numerous Java Community Process expert groups.