Java SE (Java Platform, Standard Edition)

Hi all, i'm trying to design an application that uses the user fingerprint for authentication so this involves registering the user's print in the database and all that. but my problem is i dont know if i can get any free java fingerprint api to use and how to go about the whole process. Please, i'll appreciate any kind of assisatnce you can render. i've seen some but they are trial versions. please help.
Thnk you in advance.