Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / bhavani
webcontainer loads the servlet from web application after
that container invokes public void init() method.the
purpose of init( ) function is some parametera are
requried to instantiate servlet class instance variables(
the parameters are driverclass,url,pass etc) these
variables are called as initialization parameters.
to pass the parameters into public void init( ) method
developer must pass all these parameters from web.xml file.
container reads all the parameters from web.xml file
stroes into one hash kind of object called ServletConfig .
in init() method we must receive config object reads
velues from it and instantiate connection object.
if developer want to change driver parameters,then he/she
need not have to change those parameters in servlet class
instead he called modify it in web.xml file
after init() method container invokes one function on
servlet class instance called
public void service(ServletRequest req,ServletResponse res)
throws servletException,IOException
{
} client request is processed in this method
like this web creates new instance of each servlet during
first client visit to servlet.
from next request on words web container remains the same
instance and directly sends client request to service()
method.
public void destroy()
this method is used database connection want to be closed.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
What is the purpose of requestdispatcher interface?
How do you load an image in a Servlet?
How are filters?
Which interface must be implemented by all servlets?
Differentiate between the get and post method
What are the different methods involved in the process of session management in servlets?
Difference between java beans & servlets?
Can you call a jsp from the servlet?
What are the advantages of servlets over traditional cgi?
Explain the differences between jsp and servlet.
What are the benefits of using servlet over cgi?
What is a servlet context object?
What are its drawbacks of cgi?
What do you mean by singlethreadmodel interface?
What are the jobs performed by servlets?
