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What is the main purpose of Servlet? Why it is developed in Java?
Praveen.kb
- Sep 4th, 2009
Web server is not that much intelligent to handle requests where?dynamic data to be inserted. In this case, Web servers need helper classes to accomlish the same. CGI is also widely used like?Servle...
sampra
- Mar 4th, 2008
Servlet Technology is an implementation of the CGI standard, much better than that. It allows you to create dynamic web applications as opposed to the static HTML.
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What is hot deployment?
sampra
- Mar 4th, 2008
If we made some chage in web.xml and chang reflect in progm wdout server restrt thn its called hot deployment
sure.duggirala
- Jun 27th, 2007
A web server is a simple jvm which has all the servlets, jsps and other server side components loaded in it. So in the development process if you make any change in the servlet or a jsp or o...
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What are the necessary conditions to override the init() in servlets?
For overriding init()method any rules are there
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Servlet container
What is difference between servlet container and servlet config?
delindia
- Dec 20th, 2011
A servlet config object is used by a servlet container, to pass information to a servlet during initialization. The webserver uses separate module to load and run the servlets called servlet containe...
srini235
- May 20th, 2008
Servlet container is part of web server which provides run time environment for servlets i.e it manages the entaire life cycle for the servlets like it creates instance,initialization,processing and destroying it.
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Is Servlets thread-safe?
Service() method of servlet class is not synchronize then how will it work as thread-safe for every request at the same time?
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What is the Servlet Interface?
The central abstraction in the Servlet API is the Servlet interface. All servlets implement this interface, either directly or, more commonly, by extending a class that implements it such as HttpServlet.Servlets-->Generic Servlet-->HttpServlet-->MyServlet.The Servlet interface declares, but does not implement, methods that manage the servlet and its communications with clients. Servlet writers...
senthil_2009
- Sep 3rd, 2009
The central abstraction in the Servlet API is the Servlet interface. All servlets implement this interface, either directly or, more
trinadhd
- Jul 7th, 2009
It is nothing but an interface which contains set of method names (prototypes).Those are called servlet life cycle methods.init(ServletConfig)getServletConfig()service(SeveletRequest , ServletResponce...
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Can a init(ServletConfig config) method be overrided in servlets?
vperi
- Mar 19th, 2009
Yes. We can override.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 GenericS...
Bhupender Giri
- Nov 9th, 2005
The init() method of servlet can be overridden. Remember the init() method is overloaded in the GenericServlet class. But the difference lies in which init method are u calling..if you override the in...
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What are the JSP atrributes?
sivachandran55
- Feb 25th, 2008
Actually, jsp must have a attributes, and its can be setted as well as getted. Ex, session.setattribute (" &qu...
manas_mony
- Feb 6th, 2008
I think there is no JSP attributes.But the question should be like this.........What is the attribute of page directive or include directive or ...etc.
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Suppose in web.xml file we are given 30 and in the servlet program we are given setSessionInActiveInterval(40).when that session will be terminated ? After 30 sec or 40 sec?
yogesh249
- Jun 30th, 2010
Session.setMaxInactiveInterval(20*60) Only the session on which you call the method is affected.But if you configure in DD (i.e. web.xml) it changes all the sessions of the web-application.
yogesh249
- Jun 30th, 2010
setMaxInactiveInterval specifies the maximum time, in seconds, that you want to allow between client requests for this session.When configuring in web.xml<web-app>...<session-config> ...
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What is default Session time out in the servers like Tomcat, Weblogic, JBoss,..etc?
kumar
- Aug 4th, 2007
No Guys All the answers are fully wrong ....... the container takes 18.5 minThankskumar
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What is session ?how to manage the session?
jimmy514in
- Jul 4th, 2010
I thought we use session.getAttribute("attr_name") and session.setAttribute("attr_name",obj) to use session management!Do we use getValue and setValue()...??
bhanulee
- Apr 3rd, 2006
Session is an object of method maintaining state which is act of preserving the information from one page to another page. we can manage sessions in two ways using cookies using URL rewriting
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Which method is more advantageous doGET() or doPOST()? in which situation does we use doGET() then?
mahesh
- Apr 25th, 2007
DoGET() is better
Veeren76
- Aug 17th, 2006
Practical Example of doGet()there is online newspaper and you see news using url something similar to this http://mynewspaper.com/articles/showarticle.jsp?artId=12345this is good use of doGet(), since...
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How you can activate or call one another servlet method?
hmashruf
- Jan 21st, 2007
Hi,Good to see the ways of communication between servlets.My question goes as: The servlet communication when they are running in different servlet container. sOne and sTwo are two servlets, here can we include sTwo's output in response of sOne's?Thank you.
sudhakarchowdary
- Jan 12th, 2007
To call the service method of the another servlet from other servlet1)if both servlets are part of the same web applicationuser ServletContext application=config.getServletContext(); RequestDispa...
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When destroy method get call, will it call for each user please give the ans in detail?
sudhakarchowdary
- Jan 12th, 2007
1)when the application is stopped2)when a class is replaced with the new class3)when there is no memory to operate.
Manish
- Oct 3rd, 2006
public void destroy() Called by the servlet container to indicate to a servlet that the servlet is being taken out of service. This method is only called once all threads within the servlet's servi...
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What is the difference between request.forward and requestdispatcher.forward?
muktasharad
- Sep 3rd, 2008
The question should be like - What is the difference between requestdispatcher.forward and response.sendredirect? The response will not be sent back to the client and so the client will not know...
sunil.yadav
- Jan 31st, 2007
The question should be -- What is the difference between response.sendRedirect(url) and RequestDispatcher.forward(url)?
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Servlets Interview Questions
Ans