As I understand it, the Jura is a limestone area, so I think there will be sport climbs and trad climbs (in the UK sense). I haven't been so can't give you a definite answer.
The Jura is a beautiful area with thousands of sport routes and I’m pretty sure there are plenty of easier bolted lines. Most of the guidebooks and topos show the location of all the bolts. Check out portalgorski.pl for a huge database of all the crags.