The characteristics of servlets that have gained them a wide spread acceptance are as follows:1.Servlets are efficient:The initialization code for a servlet is executed only when the servlet is executed for the first time.Subsequently, the requests that are received by the servlet are processed by its service() method.This helps to increase the efficiency of the server by avoiding creation of unnecessary...

Ashwinshenoy7

 Profile Answers by Ashwinshenoy7 Questions by Ashwinshenoy7

• May 9th, 2011

To start with, servlets are small Java programs that run on the server side of a web program. Where as Applets are small Java programs that run on the client side.Characterisctics of servlets are...

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sangram

• Mar 31st, 2012

It will provide better service

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Explain the server process how will server identifies that and response to corresponding servlet and how it sends to that response to correct user ?

urambu123

 Profile Answers by urambu123 Questions by urambu123

• Aug 13th, 2008

After we request for a jsp. There is a servlet called pagecompilor , which first parses the .jsp page to .java page.then compiles that .java page and produces .class page.EX.if we have mypage.jsp firs...

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jyoti.bhandari

 Profile Answers by jyoti.bhandari Questions by jyoti.bhandari

• May 14th, 2009

Custom Servlet is user defined servlet which extends HttpServlet class.

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What is the Difference Between Web Container and Web Server?(Asked in Polaris Interview , held on April 11, Chennai)

smartguy

 Profile Answers by smartguy Questions by smartguy

• Apr 15th, 2008

The Webserver: Just Receive the request from the client and forward to Webcontainer, and do the Response vice versa.Web Container: Creates HTTP Request and Response for the Servlet, calls the appropri...

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Write a java servlet which reads two parameters from the web page,say,value 1 and value 2,which are of type integers,and finds the sum of the two values and return back the result as a web page

kamal Mehta

• Dec 11th, 2011

String value1=request.getParameter("value 1"); String value2=request.getParameter("value 2"); Int sum; Int val1=Integer.parseInt("value1"); Int val2=Integer.parseInt("value2"); sum=val1+val2; resp...

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by default applets are trusted or untrusted?
is it possible to connect with database using applet program using type1 driver?

Murali100

 Profile Answers by Murali100 Questions by Murali100

• Oct 7th, 2012

Applets are trusted.But we can use Type 3 Driver & Type 4 driver to connect the database

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ServeltRequest: which encapsulates the communication from the client to the server.ServletResponse: which encapsulates the communication from the servlet back to the client.ServletRequest and ServletResponse are interfaces defined by the javax.servlet package.

rameshvdnv

 Profile Answers by rameshvdnv Questions by rameshvdnv

• Apr 25th, 2007

when a request is sent from the browser to a servlet, the servlet object will be created by the webcontainer if we don't provide load-on-startup element.suppose if we provide load-on-startup eleme...

Gunna

• Aug 10th, 2006

The Servlet then receives "ServletResponse" and "ServletRequest" objects.

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A servlet can handle multiple requests concurrently, and can synchronize requests. This allows servlets to support systems such as on-line conferencing. Servlets can forward requests to other servers and servlets. Thus servlets can be used to balance load among several servers that mirror the same content, and to partition a single logical service over several servers, according to task.

Prajakta Nimbalkar

• Feb 19th, 2018

Extensions to Java-enabled servers. Their most common use is to extend Web servers, providing a very secure, portable, and easy-to-use replacement for CGI. A servlet is a dynamically loaded module tha...

Mitchel K

• Jun 27th, 2005

Practical Applications for Java Servlets    This article is compiled by the IWD Team      Source: Developing Java Servlets, James Goodwill, samspublishing.com   ...

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Servlets provide a way to generate dynamic documents that is both easier to write and faster to run. It is efficient, convenient, powerful, portable, secure and inexpensive. Servlets also address the problem of doing server-side programming with platform-specific APIs. They are developed with Java Servlet API, a standard Java extension.

visalakshi

• Oct 27th, 2006

Java servlets are more efficient, easier to use, more powerful, more portable, and cheaper than traditional CGI and than many alternative CGI-like technologies. (More importantly, servlet developers g...

Gokulakrishnan

• Sep 28th, 2005

servlet is used to handle request and response .Multiple concurrent request accessing the service method of the same servlet instance,for eg:when a client give a request one instance is created a...

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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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destroy() is a servlet life-cycle method called by servlet container to kill the instance of the servlet. The answer to your question is "Yes". You can call destroy() from within the service(). It will do whatever logic you have in destroy() (cleanup, remove attributes, etc.) but it won't "unload" the servlet instance itself. That can only be done by the container

rameshvdnv

 Profile Answers by rameshvdnv Questions by rameshvdnv

• Apr 25th, 2007

Yes,we can call destroy method,but it is not recommended to call this method from our code since init(),service(),destroy()'s r servlet lifecycle methods.And in destroy()there will be aconfig vari...

hariprasad

• Apr 22nd, 2006

Destroy

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Pradeepta

• Jun 5th, 2007

ServletConfig and ServletContext are used to pass technical information from outside to the servlet. e.g. JDBC driver classes. ServletConfig is limited to the Servlet only and the ServletContext is sp...

Senthilrajan

• Jun 17th, 2005

An interface that describes the configuration parameters for a servlet. This is passed to the servlet when the web server calls its init() method. Note that the servlet should save the reference to th...

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ANS: Two ways:1. Forward or redirect from one Servlet to another.2. Load the Servlet from ServletContext and access methods.

Rakesh Parashar

• Jan 19th, 2006

Through RequestDispatcher by obtaining object of type RequestDispatcher by getRequestDispatcher() method of ServletContext but before getting object ofReqestDispatcher we have to first obtain object o...

Chidambara Gupta. Cheedella

• Sep 21st, 2005

Servlet Collaboration or Communication can be achieved either by using Request Dispatcher's Forward or Include methods (available with request object) or Send Redirect method(available with respo...

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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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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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diptendu gorai

• Dec 22nd, 2005

Very good side

Saffy

• Oct 16th, 2005

init() method acts like a contructor, it is initilized when servlet is loaded.service() method is first executed when servlets service is started.Note: service() method is override implicitly for HTTP...

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jimmy514in

 Profile Answers by jimmy514in Questions by jimmy514in

• Jul 4th, 2010

Please correct me if I am wrong,how about if we have a session.invalidate() method called during the logout button click.And while going back we can just check request.getSession(false) if the session exists then we can continue working else we have a session expired error!

Arindam

• Nov 10th, 2005

You will need to set the appropriate HTTP header attributes to prevent the dynamic content output by the JSP page from being cached by the browser. Just execute the following scriptlet at the beginnin...

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Plese help me

Amjad

• Nov 29th, 2005

Hi All,yes, you can encode the data using the Encoded techonology, in the same way you can Decode the data where ever you want.In java we have one package,java.net.URLEncoder and Java.net.URLDecoder. ...

Alex.U

 Profile Answers by Alex.U Questions by Alex.U

• Nov 2nd, 2005

You may use encoding technology in servlet

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I know only that send redircet is of client side. and remaing are severside functions

ss

• Nov 10th, 2005

sendredirect() is a method to send a file to user when perticular condition is true.include() and forward() methods are using in requestDispatcher() in this case.reqdis.include()  takes the input...

surae

 Profile Answers by surae Questions by surae

• Nov 4th, 2005

sendredirect() is used to redirect the request to the webpage present in some other server.forward() is used to redirect the request to the webpage present in the same server.include() is used to include the request to the webpage present in the same server.

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