David M. Geary is the president of Sabreware, Inc., a training and consulting company focusing on server-side Java technology. He has been developing object-oriented software for nearly 20 years and was among the pioneers who worked on the Java platform APIs at Sun Microsystems from 1994 to 1997. Geary is the author of six books on Java technology, including the runaway best-selling Graphic Java series, and Advanced JavaServer Pages. A member of the expert group that developed JSTL, he is also a contributor to the Apache Struts JSP software application framework and wrote questions for the Web component developer certification exam. Since 1996, he has been a columnist for Java Report magazine. He also writes JavaWorld's Java Design Patterns column.