I'm going to develop an application that has Flash in UI layer and Java in Business layer. Do you know how we communicate between them? Or do you know any open source supporting that one?
Wouldn't it be easier to just use one or the other? Having to run simultaneous Flash and Java processes seems like a considerable overhead (and I'm saying that without knowing if it's even possible to integrate them).
You can integrate Flash by using the Cairngorm Flex framework. Have a look at the following link for further details: opensource.adobe.com/wiki/display/cairngorm/