The way Dalvik and Android are combined, you'd almost be better off re-writing the application rather than porting it. Whilst the code is standard Java, the user interface and interaction are all designed for Android systems so would have to be rewritten.

I'd be up for J2SE, but don't really care about J2ME. ME is pretty poor to develop with as it is based on an old version of SE. Not many ME based apps are worth having, and I include my Uni Summer Project with that comment!