JME doesn't exactly have a lot of traction in the marketplace, though. Symbian has no future, and BlackBerry ditched JME for their new OS. If this is just idle curiosity, maybe looking into Android would make more sense.
You can write java applications for mobile phones like nokia, using J2ME that means java 2 micro edition which is a platform for mobile applications by java. But the phone must support java (MIDP). I wish you all good luck to develop your mobile apps.