Java servlet

A Java servlet is a Java software component that extends the capabilities of a server. Although servlets can respond to any types of requests, they most commonly implement web containers for hosting web applications on web servers and thus qualify as a server-side servlet web API.

Servlet Advantage

1. Servlets provide a way to generate dynamic documents that is both easier to write and faster to run.
2. provide all the powerfull features of JAVA, such as Exception handling and garbage collection.
3. Servlet enables easy portability across Web Servers.
4. Servlet can communicate with different servlet and servers.
5. Since all web applications are stateless protocol, servlet uses its own API to maintain  session