This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
I got a list of Item that can be filled.
But i duno how to validate the 'Quantity' field only and only if the user select an item in the 'Item' field.