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Categories >> Software >> Java Related >> Java J2EE >> Servlets


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What is ServletContext() and what is its use?
 Question Submitted By :: Servlets
I also faced this Question!!     Answer Posted By  
# 1
One Servlet Context object will be created by the container
for one webapplication. That means all servlets can have a
scope to acess that context object. for example, let us
assume there 5 servlets are there in u r web application,
if u want to share same data to all servlets then we can
share that data using servlet context, because every
servlet can have interaction with that application
Is This Answer Correct ?    171 Yes 22 No
# 2
Assume that ServletContext is shared momeroy for all
servelts which are existed in a web application,

we can place an object on to the servletcontext, and that
can uses all other servlets which are exited in the web
Is This Answer Correct ?    147 Yes 27 No
# 3
1. ServletContext is a window by which a Servlet instance see its environment.

2. ServletContext defines some methods that a Servlet instance can use to communicate with Servlet Container. E.g. To dispatch request, Writing to a log file etc.

3. Servlet Container pass the ServletConfig object to the Servlet instance when calling init(ServletConfig config) method. ServletContext instance reference exist inside the ServletConfig object.

4. Each Web application has only one ServletContext instance. So its a singleton object. If an Servlet Container deploys multiple Apps, each App have its own ServletContext.
Is This Answer Correct ?    96 Yes 7 No
Asif Shahzad
# 4
if u want to use any data which is common for all use and
common to all servlet ,that data can be specified as context
parameters in the web.xml as follows.
web container collects data from web.xml and stores that in
servlet context objects as context parameters.
As a developer,you can collect that data form context object
as follows.
String ci=context.getIntParameters("city").
All the servlets will have only one servlet context object
and can be shared with all servlets running in the container.
i.e: one web application will have one servletcontext object.
Is This Answer Correct ?    52 Yes 2 No
# 5
servletcontext is an object which contains the information
regarding all the servlets that are used in web application.
when ever user first do the deployment of the web
application on the server the web container instantiate a
servlet context object.the information in the servlet
context object is also passed to init method.
Is This Answer Correct ?    50 Yes 20 No
A,srinivas Rao
# 6
Data saved in a ServletContext scope is shared by all
servlets and JSPs in the context. The data stored in the servlet
context is destroyed when the servlet context is destroyed.
//save and get an application-scoped value
value = getServletContext().getAttribute(“application-value”);
Is This Answer Correct ?    27 Yes 9 No
# 7
ServletContext is called web application there would be one servlet context for entire web applicationthe .servlet context is used to get the context parameters specified in web.xml and also get the information of servlet engineand also request dispatcher object. 
Is This Answer Correct ?    14 Yes 13 No
# 8
as soon as the java web application is
deployed into web container ,the first
object that container create is
This object is only one per web application
Every web component of web application
share this unique object
Is This Answer Correct ?    0 Yes 0 No
# 9
A servlete context is the directory in which the servlet
are deployed in the web server. Servlet that are executing
in the same server belong to the same context.
Is This Answer Correct ?    18 Yes 31 No
Rahul Kumar

Other Servlets Interview Questions
  Question Asked @ Answers
How to pass a requrest object of one servlet as a request object to another servlet? Verizon 4
without session Id can we do any operations like add,update,edit,delete. I saw Session id is loaded for edit and delete action not for add .so am asking this Syntel 1
Why should we go for interservlet communication?   2
What is ServletContext() and what is its use? Prime-Technology 9
What is Server-Side Includes? SAS 1
What are the Internal servlets maintained by the web server? Infosys 1
can we use more than one controller in web application IBM 3
Hi guys.. Well can u tell me that why there is need of "init()" , i mean why can not we initialize the servlet object with the help of constructors? Thank you.   7
What is use of parseQueryString?   1
Hi friends, am newbie to servlet. My interviewer asked why used servlet in your application. i used servlet for controller logic and business logic . is it correct ? TCS 5
i have class files in class folder. but i have no java files. but i want to modify the java files which are related to class files . how ? TCS 5
difference between forward and sendredirect Accenture 6
For more Servlets Interview Questions Click Here 

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