The Android app called Android J2ME MIDP Runner lets you right away port your 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. Go To Here 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.
