How can I make a J2EE based application talk to my CRM system which is a web centric and is deployed in jakarta Tomcat 4.0. Do I need to create a J2EE connector. can JCA help me in this regarding? To make it more clear, How can we make our CRM system support integration mechanism via J2ee.
That depends on what kinds of APIs the CRM supports; its documentation should tell you what, if anything, is available. If it's web-centric, it should suppport either straight HTTP request/response, or a more sophisticated approach using web services. It may even come with a JCA connector, or a client library that allows external access. RTFM :-)