How we can declare the variable, which we can access through-out the session in servlet & jsp?

Brief Explanation of Servlets flow of execution. How it moves from one page to another?

Although the SingleThreadModel technique is easy to use, and works well for low volume sites, it does not scale well. If you anticipate your users to increase in the future, you may be better off implementing explicit synchronization for your shared data. The key however, is to effectively minimize the amount of code that is synchronzied so that you take maximum advantage of multithreading.Also, note...

vamshidhar Ghanpur

• Aug 27th, 2005

I can answer this Good Question based on 2 requirements 1)Less volume sites 2)High volume sites. 1)in case of less volume sites there will be less no of users,it means no of request are very less...

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Information such as the names of the parameters passed in by the client, the protocol (scheme) being used by the client, and the names of the remote host that made the request and the server that received it. The input stream, ServletInputStream.Servlets use the input stream to get data from clients that use application protocols such as the HTTP POST and PUT methods.

sivakumar

• May 10th, 2005

Really, a must-know questions for a j2ee programmer

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satyasudheer

 Profile Answers by satyasudheer Questions by satyasudheer

• Sep 19th, 2005

When you increase the buffer size in jsp using the buffer tag then it means that you are increasing the data holding capacity of the buffer. When you access the jsp(incresed buffer size) then the user...

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Chidambara Gupta. Cheedella

• Sep 21st, 2005

The RequestDispatcher.include(req, resp) is used to add a jsp to the servlet.

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satish

• Jan 12th, 2006

It will be clear if know the peer technology. If the technology is CGI , it create a process for each client request but servlet technology just creates a thread.

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Kiran Kumar

• Apr 7th, 2006

If u ActionMapping.findForward("Failure") in Action Class. The webcontainer reads the information in sruts-config.xml and get the error page file.In struts-config.xml <forward name="Failure" path="error.jsp"> 

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ravikiran_kavaley

 Profile Answers by ravikiran_kavaley Questions by ravikiran_kavaley

• Dec 23rd, 2005

The example code may help you out.Vector v = getDataVector();//getDataVector() may be some method where you will put all your objects into vector.int size = v.size();for(int i = 0 ; i<size ; i++){&...

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Lakshmi

• Dec 30th, 2005

Bean components are the data transfer objects betwen Servletsand JSPs which are goign to travel and hence they have to be serialized. Connection object is just to make a physical connection to the database specified and no need to serialize hence made transient.

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devs

• Feb 10th, 2006

session's invalidate method is used when the session will no longer exist or when for a particular client is leaving the session Eg:during the logout.sessiondestroyed is a method of HttpSessionLi...

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Manikant

• May 25th, 2006

Use can store variables in session, but u can store it in object form only.if it is primitive type u can use wrapper classes to convert it into object.session.setAttribute("test","xyzp");String str=(S...

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Mohit Singhal

• Jul 31st, 2006

The only way to know for sure is to set a cookie on a response, and see ifit comes back on the following request.  You have absolutely no clue fromlooking just at the current request.  Just ...

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siva kumar reddy

• Aug 1st, 2006

 pure servlet means we create any java objets that is implemented from javax.servler.Servlet interface.

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digvijayjpr

 Profile Answers by digvijayjpr Questions by digvijayjpr

• Oct 16th, 2006

Yes we can declare class level variable in a servlet but we can also use it in the class but as we know taht it is not in our hands to make the instaniate a servlet so cannot ...

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Simply have doGet call doPost, or vice versa.

ravi

• Feb 16th, 2006

in addition to what veeru mentioned, we can override the service(HttpServletRequest , HttpServletResponse ) method as well. service method takes priority over doGet() and/or doPost().

veeru

• Sep 8th, 2005

Simply override both the doGet() and doPost() Here is the code public doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException {  // write a a code...

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setContentType() method must be set before transmitting the actual document.

Devidas

• Oct 24th, 2005

response.setContentType("text/hthl"); line before PrintWriter line.

Harish Kumar Kandikattu

• Oct 19th, 2005

Since PrintWriter creates an object which mostly used to  markup the Hyper Text in order to display output in Browser Window i.e, HTML Page. So, the Printwriter object show know the Con...

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An HTTP Servlet handles client requests through its service method. The service method supports standard HTTP client requests by dispatching each request to a method designed to handle that request.

chinnu

• Nov 25th, 2006

Hi,by using the http methods like get,post etc .to maintain the conversional state of the client by using session tracking,cookie ,hidden techniques,the servlet wii be handle the requests.bye

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nil.choudhary

 Profile Answers by nil.choudhary Questions by nil.choudhary

• Feb 17th, 2007

What I found is there is nothing called namedDispatcher. But there is a method called getNamedDispatcher() in servletcontext which is similar to getRequestDispatcher().     &n...

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Amit Shah

• Jun 12th, 2007

The init(ServletConfig) method is defined in the Servlet interface. It has been implemented by the GenericServlet class. The implementation of this init method in the GenericServlet just stores t...

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