Will I be convicted for a first time offense shoplifting in NJ?

I did something stupid but and I will never do it again but I got caught shoplifting. Well actually, I left the story without stealing anything but a cop followed me out, searched me and found an aluminum foil bag that would be used to steal something so I am being charged with that. What should I expect to happen to me in NJ? I do not mind fines or community service, I just do not want to be convicted. I am 18 years old and I attend Rutgers University if that is any help to not get me convicted. Also to note, I had already spent one night in jail and had to pay $750 bail, would that affect anything?