I have limited experience with JavaME in the past. I've worked in only basic UI of JavaME. I have not used any Bluetooth APIs before. My organization has assigned me to a team involved in Bluetooth application development in JavaME.
Some newer article: http://www.codeguru.com/java/article.php/c13147
Again something old, but maybe useful: http://today.java.net/pub/a/today/2004/07/27/bluetooth.html
Hope that helps a little.