how to share data between servlet in different webapplication

servlet A receives a request that it forward to servlet B
within another web application in the same web container
servlet A need to share data with servlet B and data must be
not visible to other servlets in A's web application
in which object can the data that A shares with B be stored

1. http session
2.servletconfig
3.servletcontext
4httpservletrequest
5httpservletresponse

hi ranchers
please tell the answer
according to me answer must be 4 or 5

servlet A receives a request that it forward to servlet B
within another web application in the same web container

It may not be that simple. You cannot forward outside your 'context'. You could ofcourse, always, redirect.

servlet A need to share data with servlet B

Date could be stored in
1. db
2. a serialized object

You cannot store it in the standard servlet api objects, not even the context object.

ram.

Originally posted by ramprasad madathil:
Data could be stored in
1. db
2. a serialized object

In addition you can redirect it from one to another in the URL, if its like parameter string.

hi

which is the most suitable answer
please tell

we can redirect it by httpservletrequest object
so can it be appropriate

Originally posted by rehans oberoi:
which is the most suitable answer

It depends, what kind of data you want to share.

If simple strings then you can use URL approach. Otherwise, db, serialized objects, ldap, web services, etc are other means of sharing data.

This thread might be helpful.

I feel one option will be to use HttpURLConnection. From the first servlet wecan make a connection to second servlet using this class. Using HttpURLConnection will ensure that the communication is only between two Servlets and helps you two transfer the data without constraints.