Hi guys.
There are a few posts around that people tried to implement a Screen Space Ambient Occlusion (or any other AO for that matter).
Some posts seem(ed) promising but were not updated for long. Mr. Coder implemented it just fine but the code got lost. 
The questions are: Does anyone have a working solution of an AO shader (and maybe didn't share it yet)? Does anyone have a finished versions of the many work in progresses here in the forum?
Thanks for answering,
dhdd
Hi
i know that SSAO shader is planned for JME3, but it's not yet implemented according to latest night build.
Anyway, i didn't test it but this page could be of interest :
http://www.gamerendering.com/category/lighting/ssao-lighting/
hope that helps