What is Servlet?

What is Servlet?

Servlet is used to develop web application (server side java programming).  Before servlets there was a specification called CGI (Common Gateway Interface) as a server-side programming language.

A Servlet is a server side web component managed by web container for the generation of dynamic information.

• Servlet is an interface that must be implemented for creating any servlet.
• Web container will take care entire low level activities like identification of required servlet, load the corresponding servlet class, instantiation, invocation of init() and service() method.
• For servlet Programming, we must import
• javax.servlet.*;
• javax.servlet.http.*;