In Servlets tutorial we will learn about the JSR 315 Servlet Containers, advantages of Servlets over CGI, Single thread model, GenericServlet, HttpServlets, servlet life cycle, load-on-startup property, web.xml  tags like <init-param>, <context-param>, <servlet-mapping>, <servlet-class>, <url-pattern>, <servlet>, how to do  development environment setup, installation of Java, Tomcat , request types like GET, POST, PUT, DELETE, sendRedirect and RequestDispatcher forward approaches, session tracking approaches like  Cookies, Hidden Fields, URL Rewriting and  Session Tracking, writing thread safe servlets, servlet filters and its lifecycle, different types of servlet listeners, MVC and  annotations, asynchronous support, web fragments support in Servlet 3.0