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What is the difference between GenericServlet and HttpServlet?
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.
ganeshvertech
- Jun 19th, 2007
Generic Servlet invoke service() methodHttp servlet invoke doGet() and doPost().
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What is the servlet life cycle?
Each servlet has the same life cycle:A server loads and initializes the servlet (init())The servlet handles zero or more client requests (service())The server removes the servlet (destroy()) (some servers do this step only when they shut down)
Sandhya.Kishan
- Jun 22nd, 2012
Every servlet follows the same cycle
*The servlet is initialized by calling the init () method.
*The servlet calls service() method to process a clients request.
*The servlet is terminated by calling the destroy() method.
*Finally, servlet is garbage collected by the garbage collector of the JVM.
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What information that the ServletResponse interface gives the servlet methods for replying to the client?
It Allows the servlet to set the content length and MIME type of the reply. Provides an output stream, ServletOutputStream and a Writer through which the servlet can send the reply data.
Sandhya.Kishan
- Jun 22nd, 2012
The information of buffer size, content length, content type and locale is provided to the client by the servletresponse interface.
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What are the advantages using servlets than using CGI?
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.
khan.nomanahmed
- Jan 30th, 2007
Servlets are platform independent.Each request handled by CGI needs a sapreate process With java more than one request can be handled with threads.
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How do you create Http Session that never times out ?
akantilal
- Jun 12th, 2007
You can achieve this by setting a negative value for the max inactive interval for the session. Here is the code:HttpSession session = request.getSession(true);session.setMaxInactiveInterval(-1);
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C: namesList = context.listContents(someContextName);
Binding binding = namesList.next();
MyObject obj = binding.getObject();
D: namesList = context.list(someContextName);
Binding binding = namesList.next();
MyObject obj = (MyObject) binding.getObject("MyObject");
">To create a DSI (Dynamic Skeleton Interface) based server, the server must extendA: org.omg.CORBA.DynamicImplementation B: org.omg.CORBA.DynamicSkeleton C: org.omg.CORBA.SkeletonInterface D: org.omg.CORBA.DSIHow would you get the actual bound object of type MyObject using JNDI?A: namesList = context.listBindings(someContextName); Binding binding = namesList.next(); MyObject obj = (MyObject) binding.getObject(); B: namesList = context.listBindings(someContextName); Binding binding = namesList.next(); MyObject obj = binding.getObject("MyObject"); C: namesList = context.listContents(someContextName); Binding binding = namesList.next(); MyObject obj = binding.getObject(); D: namesList = context.list(someContextName); Binding binding = namesList.next(); MyObject obj = (MyObject) binding.getObject("MyObject");
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How to add timer function in JSP ?
bharaniprasanth
- Mar 11th, 2008
What do u mean by Timer ..?what is the functionality u want to achieve?
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What are the implicit objects available in JSP 3.0
ahamza59
- Jun 6th, 2009
From my knowledge, there is no JSP 3.0. The final version released of JavaServer Pages Specification is Ver.2.1, that leverages the Servlet 2.5 specification for its web semantics. The implicit object...
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I want to place two buttons one for save and one for delete.i am using DispatchAction as controller,how can i find which button i am pressing and how to diffrentiate?
DispatchAction
Dharmendra
- Jan 21st, 2006
Hi, You can specify parameter attribute in action mapping section of ur struts-config file and u can pass the value for parameter in jsp declaring the hidden fields.Set the hidden field va...
mannu
- Nov 3rd, 2005
We can use actioncommand method that will give use caption of button and by comparing it to whatever string we want we can verified.
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Please write question of interglobe technologies interview
If you have given any interview in interglobe technologies
bharaniprasanth
- Mar 11th, 2008
Yes some body please post useful interview questions like what they have really asked in the interview than the useless ones about the theory...because they can't get u a job...
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How to Upload a textfile from JSP to Servlet
shaik_masthan
- Dec 23rd, 2005
You must use the tag <input type=file>Remember form tag must contain the following attribute enctype="multipart/form-data" then only it will validate file upload.if you want file upload servle code please mail me shaikmasthan@gmail.com
charanvv
- Oct 20th, 2005
if u used MVC architecture u just usedin jsp<input type="file" > tagand in servlet use just used servletInput stream to get that fileand do whatever u want by using IO.api package
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When to use struts technology? what type of applications are developed using struts frame work?
ravikumarzee@gmail.com
- Feb 28th, 2006
Struts forces us to use MVC architecture. It helps in code maitainability. It also eliminates most of the repetitive code which is common to most of the web applications.
charan
- Oct 20th, 2005
for large applications and repeated view can be happen from different actions mainly struts technology is used for easily maintian large applications compare with jsp technology and more....
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implements the SingleThreadModel interface making the Jsp
">Implementing the tag implements the SingleThreadModel interface making the Jsp
Skill/Topic: Programming ConstructsA) None of the above B) content safeC) synchornisedD) thread safe
reshmarout
- Mar 28th, 2006
Thread Safe,so that no other request can interrupt.
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We can restrict the calling of the errorPage in the JSP by setting the value true for the ______ param in the ErrorPage attribute of the Page Directory
Skill/Topic: Programming ConstructsA) isErrorpage
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State true or false - We make use of a ServletOutputStream object from the JSP page
Skill/Topic: Programming ConstructsA) TrueB) FalseExplanation: use the JSPWriter object
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State true or false -- ServletContext class gives information about the Request?
Skill/Topic: Programming ConstructsA) TrueB) FalseExplanation: ServletContext: Gives the information about the container. PageContext: Gives the information about the Request
nainaaltaf
- Jan 28th, 2009
False. ServletContext give info abt container while pageContext give info abt request
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When u try to redirect a page after you already have written something in your page, the error encountered is “Response has already been committed error” or popularly called 402 error.
Skill/Topic: Programming ConstructsA) FalseB) True
JSP Interview Questions
Ans