Using any code elements or resources from JA, equals commercial exploitation.
Utilising any factors of Star Wars intellectual property, equals copyright infringement, plagiarism (the kind you can get sued for), and theft of intellectual property.
Both require rather expensive licenses in order for them to become legal.
Said it before, will probably say it again: Welcome to the era of red tape, where you can't even take a crap without having a judicial summons shoved through your mailbox. -_-'