Event Notification Web Service (ENS) is an interesting Amazon API. It was launched in 2007 and seems to have a mixed history. It is really not clear if this is supported or not. The published documentation is minimal:
The forum has no Amazon folks in sight:
Some of the older APIs that have been abandoned clearly state that fact in the forum. For example, the Amazon Inventory Management (AIM) API is superseded by MWS:
I think this API has been abandoned without such a post. This API seems to be supported by folks from Seller Ceneteral and not AWS. Maybe this is a relic of a internal power struggle with ENS getting the short end of the stick.
In any case, a java SDK can be downloaded as an eclipse project from here:
The main issue with getting the project to compile is that the required jars are not included. Here is a ivy dependency list that worked for me:
The one other issue is that the source code refeers to:
in a few places. Change this to:
and you should be off to the races.