New to J2ME, dont know how to read files on phone mem

i check all the .io packages, still cant find any class that would help me to read files on phone memory.
and i see that javax.microedition.media.Manager.createPlayer(String locator), require a string input argu. how can i make this string locator point to a media file on phone memory of TF-card.
i heard Kjava has some packages from j2se, is there any class would help me? plz someone give me a link of Kjava reference, i cant find it anywhere, thx a lot!

oh~~~no!
i am afraid i cant enjoy myself with file conn.
i tried several times, only to get a "Security Exception", and i contacted with moto dev center, they say that unless i have a cert, i cant use file conn API and many other APIs that is defined as restricted!!!
and for the cert, if i have a biz relation with moto, they could give a "Develop Certification", or i must pay a third party to get a cert...
what a world~~~~~~~~~~~is unfair!!!

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