It may all depend on what it was the he stole and how valuable it was. A suggestion would be to appear before the judge acting as contrite and remorseful as possible and throw himself on the mercy of the court. Due to his imminent departure for the Navy the judge MIGHT treat him leniently, HOWEVER - don't look for the charge to be dismissed entirely - that would be asking too much.
It all depends on where you live. And where you shoplifted from. The police and loss prevention cannot look through your things unless you have given consent. If they do search through your belongings, they cannot use anything they find against you.
Film
No. If you are 18, your parents will not be notified by the store or the state. However, you will probably be arrested, and your parents would therefore probably find out anyway.
No offense but naturally u will get fat
That depends on the jurisdiction.
Go to jail
If you are convicted of perjury and this is your first offense what happens
Either it scared him "straight" or he feels more invulnerable than ever. Hopefully it scared him straight. At some point, if he keeps it up, he will inevitably be caught. If he is 17 by then, things will be very bad, as it will be on his record for years.
It can depend totally on what offense the warrant was issued for. For instance: if you are an escapee - or if you committed a capital offense (i.e.: murder or criminal sex assault), it will still be valid.
Your license will be revoked. Also, you will have committed a criminal offense.
Depending on the offense, a bench warrant may be issued for their arrest.
The short answer is that there is a mechanism for this, but it gets no funding... thus, it doesn't happen.