For the people using the Android platform, you might have found it difficlt running a Java J2ME midlet application on your smartphones like the Symbian phone users enjoy. May be you Convert Java (.jar) applications to Android .apk format before you run them. Here is a tip for you to directly run Java Applications on your Android smartphone platform.
All you need is download the JBED Android Java Emultor, install it and everything would be smooth for you.
Here is a link to download JBED Android Java Emulator.