Your profile said from New Jersey, and all laws in the states are different if I'm correct..
You might not get jail time, depending on what you stole, if you had not offended before, you might get a fine or community service or maybe a warning. If you are a repeat offender then you would not get a very long time in jail depending on what other crimes you have committed. Even if your time in jail was very short (the website i looked on didn't specify) it can still affect jobs in the future.. I hope this question is just hypothetical however :)
actually i found it..
Fine -250-1000 plus payback
Jail time - 6m-1yr
Probation time - 1 year
Depends on how many prior offenses u have