The Android app called
Android J2MEMIDP
Runner lets you right
away portyour existing
J2ME [jar/jad]
applications to Android package (apk) without
source code.

u can convert java apps
into .apk, which is much
simpler than the above
method.

http://netmite.com/android/srv/2.0/getapk.php

For android You can either give URL
of a Jad file or upload
the downloaded jar/jad
file for conversion.
Now- u can either
convert your modded software through
phone or online, enjoy
free gprs with android
phone too .

Note: M not the
founder, just got the info from net, and
posted it here better
use online conversion.