Here are the steps
- "Java App Loader" must be enabled. To check whether its enabled , go to Settings->Java Settings. There should be a menu called "Java App Loader"
- Download Motorola`s MIDway tool , needed to export JAD files to the phone. This is part of the Motorola`s J2ME SDK
- Write the J2ME app and package it into JAD. Refer to this doc for more details
- The USB cable can be used for transfer. Make sure the COM port is set correct in MIDway tool
- Click on "Java App Loader". "Insert cable now" msg appears
- Open the MIDway tool now. It should now connect to the Phone.
- Once connected the JAD can be uploaded to the phone and it will appear under "Games & Apps"