What is Servlet ?

A Servlet is simply a java class which responds to a particular type of network request - most commonly an HTTP request. Servlets were designed to solve the problems faced in CGI. Usually Servlets run in Servlet container. One of the best-known open source servlet containers is Tomcat.

You can download Tomcat from http://tomcat.apache.org/.

Java servlets are key component of server-side java development. Platform independent feature of Java, makes servlets more popular.

Java Servlets are defined by Sun Microsystems. Even though they are defined by Sun Microsystems, they are not part of core java API.

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