#195 Fix issue related to java dependency

[h f]

Hi
I have a problem. I've just downloaded chromis pos, and when I try launching it, it pops up a error re java.

I see I'm not the first to have this issue. See here:
https://sourceforge.net/p/chromispos/discussion/help/thread/6925ba27e0/
https://sourceforge.net/p/chromispos/discussion/help/thread/ce76bbcd0f/
https://sourceforge.net/p/chromispos/discussion/general/thread/1269cb6e48/
https://sourceforge.net/p/chromispos/bugs/151/
https://sourceforge.net/p/chromispos/bugs/184/

So can I just suggest chromis should look into this to see if you can do something?