Dynamic content-personalized, customized, and up-to-the-minute-is a key component of site development on the World Wide Web today. Java Server Pages (JSP) is a new server-side technology for generating dynamic content in Web pages and other on-line applications. This guide to JSP covers all aspects of development for the new versions of the JSP and Servlet specifications (1.2 and 2.3, respectively). The many new features introduced in these versions are discussed, including servlet filters and enhancements to the API for JSP Tag Libraries. The interaction between JSP and other J2EE technologies, such as Enterprise JavaBeans, are also covered, as are comparisons to similar dynamic content systems including CGI, Active Server Pages, Cold Fusion, and PHP.