CAY S. HORSTMANN is Professor of Computer Science in the Department of Computer Science at San Jose State University. He is an experienced professional programmer and was Vice President and Chief Technology Officer for Preview Systems, Inc. He is also a consultant for major corporations, universities, and organizations on Java, C++, Windows, and Internet programming. Horstmann is the author of many successful professional and academic books, including Big C++, Java For Everyone, Big Java, Java Concepts, Object Oriented Design and Patterns (all with John Wiley & Sons, Inc.), and Core Java (Sun Microsystems Press), with Gary Cornell.