Servlets are Java classes that create HTML pages with dynamic content and respond to requests from client applications that are implemented as HTML forms. Servlets also allow you to execute business logic from a Web browser or any other client application that connects using the Hypertext Transfer Protocol (HTTP). For more information on creating servlets, see Chapter 22, “Creating Java Servlets.”
Web clients invoke your Web application’s servlets by prepending the Web application’s root request path to an alias that is mapped to the servlet. For example, the following URL invokes a servlet mapped to the alias “Account” in the application with root request path “Finance”:
http://myhost/Finance/Account?type=add
