siva kumar reddy

• Jul 31st, 2006

 use this methodHttpSession session=request.getSession(false);in this case the web container checks JSessionID is available on  behalf of client or not.if session is alive it sends old session id.if session is not available it returns null object.

chetan

• Jan 1st, 2006

U can use the isRequestedSessionValid() method or another method is to use the getRequestedSessionId() method and check with the session id we have by getting the requestedId by req.getSessionId()

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siva kumar reddy

• Jul 31st, 2006

getInitParameter() method is available in servletConfig and ServletContext();by using this method we get values of init parameter and context parameter.ex:for suppose in web.xml we configure like this...

Mukesh Kumar

• Nov 15th, 2005

This can be done by using the getInitParameter(String name ) method of the ServletConfig interface. Here name is the init parameter name

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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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sivamscs

 Profile Answers by sivamscs Questions by sivamscs

• Jul 29th, 2006

True Aditya...

Aditya Chaturvedi

• Jun 1st, 2006

EJBs have totally different purpose than Servlets/Struts. EJBs are used for business components which require some basic set of features like transaction/persistance etc. and EJBs are hosted in Applic...

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Nagaraju

• Jul 23rd, 2006

Jagmohan,              I am really happy after saw your answer.It is the perfect and Suitable answers.Thanks & Regards,Nagaraju.  

Jagmohan

• May 17th, 2006

you can use plug-in for that  in struts. Make a plugin by implementing plugin interface in java and then override the init() method(load your hibernate config. files)  and destroy() method to free the resources.

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Answered by Scott on 2005-05-12 10:39:32: A servlet that implements SingleThreadModel means that for every request, a single servlet instance is created. This is not a very scalable solution as most web servers handle multitudes of requests. A multi-threaded servlet means that one servlet is capable of handling many requests which is the way most servlets should be implemented.  A single...

chandra_raya

• Jul 12th, 2006

Hi,As the name says Singlethread means only one thread, can access the service method of the servlet, to reduce the overhead the servlet container creates pool of servlet instances to handle n number of request that is depend on the servler configurationthankschandra

Scott

• May 12th, 2005

A servlet that implements SingleThreadModel means that for every request, a single servlet instance is created. This is not a very scalable solution as most web servers handle multitudes of requests. ...

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Ravindra

• Jul 10th, 2006

Default method is doGET() not doPOST()..

Mohanraj

• Jun 1st, 2006

No Buddies the default Http method in http servlet is doPOST( ) method if you have a doubt do and check in sun java .com

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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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rahulshevkar

 Profile Answers by rahulshevkar Questions by rahulshevkar

• May 3rd, 2006

when we send any request to the servlet, that request tryies to find servlet 1st. second servlet executing following sequence of methodinit()service()destroy()so the 1st time request to servlet, ...

krishna kumar jha

• May 1st, 2006

Initialization of servlet by server on startup prior to getting the request for that servlet is know as preintialization.It is really accomplished by specifying the postive value in load-on-startup tag in the web.xml.

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soorma

 Profile Answers by soorma Questions by soorma

• Apr 22nd, 2006

String Buffer is peer class of String which provide much of the functionality of strings.  "String represent fixed length immutable character sequences" Where as "String Buffer Represent grow abl...

nagan

• Apr 6th, 2006

StringBuffer is a class it comes with a default buffer all string manipulation are done in this buffer only.StringBuffer class is introduced by designers because String class is a Immutable.StringTokenizer class is used to seperate strings into tokens as per delimeters.

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Akshay

• Apr 19th, 2006

hi,I apprciate ur answer,if u know jsp then tell me in jsp if there is include directive element then why they have provided include action element.        &nbs...

ak40732

 Profile Answers by ak40732 Questions by ak40732

• Mar 25th, 2006

Threre are two types of References available in Java.   1.Interface references.2.Class references.Interface references:The interface references are used to implement runtime polymorphis...

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Maneesh

• Apr 19th, 2006

Vector is a legacy class and its synchronized, which means whatever operations performed on Vector is synchronized...but more accurate any1 plz???????

Vinod

• Sep 27th, 2005

Vectot is a legacy class and its synchronized, which means whatever operations performed on Vector is synchronized

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Isis

• Apr 15th, 2006

Servlet is controller and JSP is of more a view so when the project needs more on view oart we can add JSP other wise both can do the sane thing but in larger projects the servlet code becomes cluttred

manikant

• Oct 31st, 2005

Generally for small projects we use JSP model-1 where we use JSP for view and beans for business logic. For large projects while implementing JSP model-2 (MVC architecture) we use JSP+Servlet+Java Beans.

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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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Anjana

• Apr 4th, 2006

Disadvantage of SSI There is one down side of Server-Side Includes. They are very processor intensive. If you don't have a high-powered computer running your web server and you expect to have a lot of traffic, you might want to limit the number of documents that use Server-Side Includes.

sarada

• Dec 25th, 2005

when ur going to store httpsession supose 100 those 100 objects r stored in server side so memory is waste+ 2 process takes much time

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Parv

• Mar 19th, 2006

Go to this thread on this site only...http://www.geekinterview.com/question_details/18071implement this and ur problem is solved

Harish

• Feb 15th, 2006

But when we press back button in the browser, that might go to the previous page even session is closed or invalidated..suggession needed regarding this.RegardsHarish

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Harish

• Feb 16th, 2006

when we are sure that we are going to send certain amount of bytes or characters upto 400 bytes , we can use GET. If it exceeds that limit we can go for POST. Any number of bytes can be sent over the net as name and value pair and bundled with HTTP.Regards

javamatrix

 Profile Answers by javamatrix Questions by javamatrix

• Sep 30th, 2005

By default, every request sent is by GET. only when we explicitly mention that the method is post, is the request sent by post.

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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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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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Naim Kazi

• Feb 7th, 2006

Session tracking is done to maintain the state, as HTTP is an stateless protocol.Session tracking can be done in following ways - 1. Cookies.2. Hidden variables.3. URL rewriting.When you use GET, then...

sarada

• Dec 25th, 2005

to maintain the state of http we use session tracking as http protocol  is stateless. to avoid this  problem is we use hidden fields,cookies,sessionget is used 2 get information + 2 some bro...

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