J2ME Polish is distributed under the GPL with the Classpath exception:
GPL with Classpath Exception
You can use our GPL + Classpath exception license for any projects, you do not need to open source your project nor pay any license fees.
More information about the GPL is available at these sites: http://www.gnu.org/licenses/gpl.html
If you require support for J2ME Polish, please get in touch with Enough Software at firstname.lastname@example.org.