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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GenericServlet is for servlets that might not use HTTP, like for instance FTP service.As of only Http is implemented completely in HttpServlet. The GenericServlet has a service() method that gets called when a client request is made. This means that it gets called by both incoming requests and the HTTP requests are given to the servlet as they are.

Priyanka Garkal

• Feb 25th, 2018

1.GenericServlet is base class of HttpServlet And HttpServlet is derived class of GenericServlet. 2.GenericServlet have abstract service() method whether HttpServlet has seven methods which can repla...

Abhishek yadav

• Apr 23rd, 2015

Generic servlet can use only service method but in Http we use doGet ()& doPost ().
Http servlet are protocol dependent but generic servlet are protocol independent..
Best of luck!

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Ajay Pandey

• Dec 13th, 2017

GenericServlet class implements Servlet interface but leave the service method without implemented. This is the reason GenericServlet class is declared abstract class because giving implementation to ...

Chinmay Das

• Dec 10th, 2015

GenericServlet is a Abstract class because, it has two init methods, init(ServletConfig conf) and init(). Here, It uses parameterized init to set the ServeletConfig object whereas the second init() i...

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Service() method of servlet class is not synchronize then how will it work as thread-safe for every request at the same time?

vinay

• Sep 16th, 2017

Above mentioned both (Servlet and JSP are multithreaed) so my question is (suppose if the thread deads in servlet it may not) then how can we say that multi-thread, can you explain if it occurs and how to handle.

sujata waghmare

• Jan 10th, 2014

Servlets thread safe..servlet and jsp both are multithreaed thats why control the flow ...

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

Yogesh

• May 9th, 2017

Nothing Special. It will just execute normal methods. But, it wont work like life cycle method. When JVm invokes these methods then only it will execute like life cycle method.

Ashwani Gupta

• Apr 29th, 2016

overriding init() method wont do any special effect here since web containers initializes the servlets by calling init() method with ServletConfig object as parameter and not the init() method without...

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neeraj srivastava

• Jun 16th, 2016

Yes, Servlet creates only one instance either request is 100 or 200..

kesav chari

• Jun 28th, 2013

Only one ServletObject is Created , even multiple clients sends the request to server . Because that servlet object is removed when the Project is undeployed from the server or when stop the server

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Aqib Ansari

• May 23rd, 2015

We can override service method. but we should not override it. why????

pinkye

• Jan 11th, 2007

You should NOT override the service() method.Your job is to override the doGet() and/or doPost methods and let the service () implementation from HTTPServlet worry about calling the right one.

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I don t KNOW

Kinjo

• Nov 5th, 2014

Servlet run inside a servlet container on the server side where as applet run on the client side inside a browser.

Gopi Devarapalli

• Sep 11th, 2014

Applet is web application that runs on browser. where as servlet webapplicaton that runs on server which can be accessed.

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Gopi Devarapalli

• Sep 11th, 2014

The doGet() attach result to URL. where as doPost it will not show result on the URL. It is internally attaches to next resources.

sandy

• Jul 17th, 2014

if we override either lifecycle or non-lifecycle service method, then our servlet class loses the logic given by the super class but if we override doGet() or doPost() method of super class , then our...

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sujata waghmare

• Jan 10th, 2014

Yes..we can write a constructor in servlet...most important things is init() only inilization ....but constructor perform operation thats why we can write a constructor in servlet...

Rohit

• Jul 30th, 2012

Do get is like a open store, let come take what you want...but match the address....then
dopost is posting the all data to where is a address like all information in one box.

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sujata waghmare

• Jan 10th, 2014

we can use servletcontext it condition whole application only one object...dont change a servlet...only change a web.xml file...one object use to whole application that situation use a servletcontext....

Gita

• Jan 28th, 2012

Http://tomcat.apache.org/tomcat-4.1-doc/servletapi/javax/servlet/ServletContext.html go through this link u will find setAttribute() method.

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sujata waghmare

• Jan 10th, 2014

I think..only one time ...only used to destroy()..

mallikarjun

• Jan 24th, 2012

We can destroy servlet in two ways one is when the server time out and another one is when power off.

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SUJATA WAGHMARE

• Jan 10th, 2014

Before servlet used to technology cgi....but cgi have a drawback...cgi throw send requests to web server..then web server make process for one request...thats why processor not response to the client.....servlet is share comman memory area...this is different between servlet and cgi...

Amit Udiya

• Feb 28th, 2012

Each time whenever a request comes to a CGI from server,it opens a new connection for that request.If a number of clients make request to the same serve,CGI will open a new connection to serve their r...

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SUJATA WAGHMARE

• Jan 10th, 2014

Doget() accept http type of request form protected seveices()...send data to url throw..meas limited data..services method used to genericservlet class and only accept servletrequest nad servletrespons object..no accept http type request....

delindia Fathima

• Dec 22nd, 2011

Service method orginates from Generic Servlet and so service method is used to do something which does not involve http protocol.

service handles standard HTTP requests by dispatching them to the handler methods(doXXX) for each HTTP request type

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Protected.

SUJATA WAGHMARE

• Jan 10th, 2014

I think..protected void services(httpservletrequest request,httpservletresponse response)throw ioexcpetion , servletexception...this is modifier for httpservlet class service method...

delindia fathima

• Dec 22nd, 2011

Sorry i was not clear with my previous answer.So posting answer again We have two service methods in httpServlet public void service(ServletRequest req, ServletResponse res) throws ServletException, ...

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sujata waghmare

• Jan 10th, 2014

yes..but our functionality may be loss..that why web continer... calling services() then services two type.first one is public service() and second one protected services()...public services meth...

kishore

• May 9th, 2012

OK,but my question is... In HttpServlet class service method calls doGet() or doPost() method .Intead of overriding doGet() or doPost(),why should we not override service() method itself?????

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what are forward & include methods? Why these are used?

SUJATA WAGHMARE

• Jan 10th, 2014

1 ]forward method :client send request first servlet and first servlet forward the request second servlet most important things is second servlet give a response to clinet.... 2]include method:clinet...

delindia fathima

• Dec 20th, 2011

The RequestDispatcher include() method inserts the the contents of the specified resource directly in the flow of the servlet response, as if it were part of the calling servlet. The RequestDispatch...

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Janga Yella Raju

• May 25th, 2013

Calling destroy method by himself. Doesnt means destroying the servlet. Container will take care to destroy the servlet when application undeployed or system shut downs. So, if 1 user calls destroy m...

sampra

 Profile Answers by sampra Questions by sampra

• Mar 4th, 2008

If there are 4 user and one has distroy the thred then thread which he is using only that will be distroy rest will be keep alive

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