Java Servlet Programming, by Jason Hunter.
Covers the Java Servlet API, a standard extension to Java that provides a generic mechanism for extending the functionality of any kind of server. Explains the servlets to maintain state information effortlessly. Describes how to serve dynamic web content, including both HTML pages & multimedia data.
Java servlets offer a fast, powerful, portable replacement for CGI scripts. This book covers everything one needs to write effective servlets. Topics include serving dynamic Web content, maintaining state information, session tracking, database connectivity using JDBC, and applet-servlet communication.