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This post demonstrate the use of external objects in JSP. In this example, objects of a user defined class are created & shared among requests with the help

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Practical example of external objects in jsp by Neeraj Sir

#usebean

Inter application forwarding the facility of forwarding request from on application to another on the same server. inter application forwarding is facilitated

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What is inter apllication forwarding? by Neeraj Sir

#servletrequest

To read initialization parameters from ServletContext, getInitParameter() method is used. this method is defined in both ServletContext & ServletConfig.

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Reading initializaion parameters from ServletContext by Neeraj Sir

#servletcontext

Request redirection is the facility of redirecting the browser to another server application by providing a url as the response of current request.

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What is request redirection in servlet? by Neeraj Sir

#servletconfig

In the practical example of inter application forwarding, we will create App1 and App2 applications which we have discussed in the last post.

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Practical example of inter application forwarding by Neeraj Sir

#servletcontext

Can destroy() method be invoked explicitly? This is the most frequently asked interview question of java. Most of the people give wrong answer of it.

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Invoking destroy() method explicitly by Neeraj Sir

#servlet

Can more than one servlet objects be created in a web application? This is the most frequently asked question in interviews. The correct answer is yes.

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Can more than one servlet objects be created? by Neeraj Sir

#servlet

What is the need of creating servlet objects at the time of deployment? If need is understood we can find out how we can as the server to create mulitple servlet

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Creating servlet objects at the time of deployment by Neeraj Sir

Reading multi valued parameters in a servlet is required when input form contains multi valued input controls such as check boxes and combo boxes.

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Reading multi valued parameters in a servlet by Neeraj Sir

#servletrequest

Reading unknown parameters in a servlet, is required when the servlet programmer doesn't know how many parameters are sent by the user as part of request.

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Reading unknown parameters in a servlet by Neeraj Sir

#servletrequest

In this file uploading example of servlet we have used apache commons file upload API for processing multi part request.

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File Uploading example of servlet by Neeraj sir

#servlet

File downloading is a two step process. In the first step, links of the files are obtained and in the second step, files are downloaded using the links.

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file downloading using servlet by Neeraj Sir

#servlet

A cookie is a token which is sent by the server as part of the response and is returned back by the client as part of the subsequent requests.

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What is cookie and why is it needed by Neeraj Sir

#servlet

This post contains a practical example of state management using cookie. In it user name is maintained between two requests with the help of a cookie.

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state management using cookie by Neeraj Sir

#servlet

URL rewriting is another browser independent approach of maintaining the client's state between requests. In URL rewriting, state is dynamically appended to

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state management using url rewriting by Neeraj Sir

#url rewriting

hidden form field provide and alternative way of state management which is browser independent i.e. hidden form field can't be disabled from the browser.

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State management using hidden form field by Neeraj Sir

#servlet

HttpSession is a Servlet API interface. Implementation of it is provided by server vendors. An object of type HttpSession can be get created for each user.

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State management using HttpSession by Neeraj Sir

#servlet

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