Hi Prakash,
Normally there are 2 ways of validating Credit
cards.
1. Validations are done using JavaScript to check the authenticity of the card no and the expiration date.
2. Actual balance available for the credit card using 3 party tool for sending the request to the Payment Gateway. The method could be the business method defined by Maulin other than the ejbCreate one.
Hope this is clear.
Seetesh