At first I want say that this engine is very cool! In jMonkey (thanks to AppState, Controls and good documentation with examples, thanks http://jmonkeyengine.ru site to) in my code order more when unity3d or libgdx AppState is very cool feature. ) For a few weeks, doing my free time on weekends, I feel good progress in my knowledge, while I do not feel much difficulty in studying)
Although my level of programming is not high.
One question. In unity3d there is internal UnityEvents or can be used c# eventsystem. I search event for jMonkey. I found guava eventsystem and greenrobot eventbus. what do you use for events?