what is the difference between?when we write the code in
following manner?
class One extends httpservlet
{
}
and
class One extends genericservlet
{
}
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Answer / rajavardhan reddy k
1.GenericServlet is direct implementation of Servlet
interface.In GenericServlet the servlet lifecycle method
service() is not implemented. so it's declared as
abstract.It will be useful whenever we developing the
applications based on the protocols like FTP. even it can
be used to develop HTTP based applications.GenericServlet
is in javax.servlet package.
2.HTTPServlet is indirect implementation of Servlet
interface.HTTPServlet implements all the methods of Servlet
interface.It's specific to HTTP protocol.In these days most
of the applications are web based applications(HHTP
protocol based). so that to simplify the development work
Sun people intoduced HTTPServlet class.HTTPServlet is a
abstract class even it's implements all the abstract
methods.sun people don't want to allow to create a object
for HTTPServlet so they declared it as a abstract class.In
HTTPServlet class 2 service methods are declared.
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / geetha
generic servlet is for all type of protocols and
http are specific to http protocol
| Is This Answer Correct ? | 3 Yes | 2 No |
Answer / saikiran
We are extending GenericServlet because of 3 Reasons
1.no need to implement 5 metods JVM will take the
responsibility to implement 4 methods init(),deistroy
(),getServletConfig(),getServletInfo()
2.Object to Object communication
2 point is there in java1.0 that is not there because of
when the Object is taking Anther Object Reference that
was unnessarly misusing
finnaly we don't have much benifits and we are
UnNecessarly Incresing the Load on JVM
We are extending HttpServlet Because of
People are Mainly Using Http in Most of the Time for
that sun has given API to Convinient to those People
Note:GenericServlet and HttpServlet are Doesn't knows to
ServletContainer
Because of that was Violationing the
1.Public with NonAbstract
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / ravikiran.chd
the first one will restrict you to make use of http protocol
with the second one we can use other than http protocols as well
| Is This Answer Correct ? | 0 Yes | 0 No |
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