The Maemo operating system on Nokia N900 does not yet have official support for Java, but thanks to lcedtea6 and Microemulator apps we can run any Java app on our N900. MicroEmu is a pure Java implementation of Java ME. MicroEmu is licensed under LGPL and major parts under Apache License as well. Since then, a lot of work has been done to make this tool even better and support more and more different Java ME applications and games. I've got a lot of positive feedback as well which also helped improving quality of this project.
"Source:Google Reader