Is there a simple way to update data in a mobile phone?

I'm in a work on J2ME.This work is to make we Chinese easier to recite English word.If we can see these English words on our mobile screen every now and then,then it would be of great help to us.
The most tough point is that we have to update those words for we cannot put every words, say , in TOFEL ,into our RMS.We cannot simply transmit those words with a USB line for JVM do not support it and it costs a lot with woreless network.
So I make out another seemly demanding plan.I can translate words in a .txt(certainly in some format) to a .class which would have been genenrated from a .java containing RMS otherwise.And then we only have to generate this class from various word lists and make the whole project a .jar file.
What I want to ask is :
Is there a better way to update information(or database) in J2ME?
Can I generate .jar file without JRE in windows?For i don't want to force every green hand be bogged down in setting JRE.
Thanks!!

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