Sun Java System Web Server 7.0 Update 1 Developer's Guide to Java Web Applications

About Servlets

Servlets, like applets, are reusable Java applications. Servlets, however, run on a web server rather than in a web browser.

Servlets provide a component-based, platform-independent method for building web-based applications without the performance overheads, process limitations, and platform-specific liabilities of CGI programs.

Servlets supported by the Web Server are based on the Java Servlet 2.5 specification. Servlets are created compiled and packed into a Java web application archive WAR file and then deployed to the Web Server and managed at runtime by the servlet engine

Basic characteristics of servlets include the following: