Just brought my first Cruiser, getting a LOT of pain in my hands from the bars, any Ideas?

Just brought my first Cruiser (Jinlun JL 125-11), getting a LOT of pain in my hands from the bars, any Ideas? Brought the bike to learn on basicly, been riding a 125cc scooter/moped for the last year but it's obviously time for an upgrade. so i've had the Cruiser for 2 days now, and after about 10 mins riding i get sharp shooting pain through my right (brake) hand and up my wrist. obviously i'm used to straight handlebars so any suggestions on how i can reduce the pain asap so i can ride this beast properly. thanks