Java Lisence key

Hi I need a Liscene Key gererating Code for my small application in java swing .The code must generate key and also verify it.I was looking at couple of good freelance Programms .one is True License at [login to view URL] and also found one example code for it at [login to view URL] Also found one at [login to view URL] you can either use the above freelance project or else create one . please let me know if any of you are intrested. Cheers