Server Side Includes (SSI) are commands and directives placed in Web pages that are evaluated by the Web server when the Web page is being served. SSI are not supported by all web servers. So before using SSI read the web server documentation for the...

Session's can be considered as a series of related interactions between client and the server that take place over a period of time. Because HTTP is a stateless protocol these series of interactions are difficult to track. That’s where we can use HttpSession...

Cookies are piece of data which are stored at the client’s browser to track information regarding the user usage and habits. Servlets sends cookies to the browser client using the HTTP response headers. When client gets the cookie information it’s stored...

A protocol is stateless if it can remember difference between one client request and the other. HTTP is a stateless protocol because each request is executed independently without any knowledge of the requests that came before it. Figure: - HTTP Protocol...

Servlets are small program which execute on the web server. They run under web server environment exploiting the functionalities of the web server. Servlet life cycle Figure: - Servlet Life cycle There are three methods which are very important in servlet...