whats the java unlock code for the Samsung A767(Propel)?

I have a samsung propel phone. I downloaded some java games which are in ".jar" and ".jad" format. I want to run them on my phone but everytime i try to i get a message saying "Unsupported file type". I've heard that the way to fix this is to find the java unlock code. But i've been looking everywhere and i am unable to find it for my phone. and of course, i don't wanna resort through DOWNLOADING the java game from my phone cuz then ill be charged data transfer fees. anybody able to help me out?