Sooooooo much depends on table position, chip stack, number of players at table.
JJ is a nice starting hand but you gotta be worried with an overcard, particulaly with more than player in. My advice with a full table, small blinds, early position......Make a minimum 6 x BB raise, push out the limpers, if you get a caller and more than 1 overcard comes then dont be afraid to lay down your hand. No overcards make a MINIMUM pot size bet, maybe more, depends if any draws develop from the flop
Late tourney, with a medium/low stack then you gotta think about an all-in move