Question: I have a rather unusual idea. I want to run a single instance of a Java EE application client inside app server, in a similar way that JMS provider is run/embedded "within" the app server, so that it is started and stopped with the app server. Why? To ease deployment and maintenance of a complex distributed Java EE system which has application client as part of its architecture.

So:

1. There is only one application client on each server where there is app server (Glassfish).
2. I would like to have the application client run in the same start-stop cycle as the application server, and not as a totally separate entity run under a (apache or similar) system service wrapper.

Is this possible?

Answer: 
You can use [GeckoFX](http://code.google.com/p/geckofx/) to embed firefox
Try this: <http://code.google.com/p/geckofx/>