Yes, it's possible 100%.
Take a look at the Emergency Service Demo application here: https://github.com/Salaboy/emergency-service-drools-app
A description about this application can be found at:
http://salaboy.wordpress.com/2011/01/01/emergency-service-drools-application/
The Emergency Service Application it's a Swing Application and uses Slick 2D (a graphical library).
Here is a video explaining what the application is about: http://www.vimeo.com/18343529
Any feedback about it is appreciated.
Hope it helps!