I found this book very informative. I would recommend using it in conjunction with a good J2ME reference guide (such as Learning Wireless Java). The examples work (I was very surprized by this...), if you want to start writing games this will give you a good foundation.
Good introduction
Rating: 5/5
Good introduction to both game development and j2me overview and programming. Good examples you can relate to.
Great book for beginning MIDP game developers
Rating: 5/5
I have a number of J2ME/MIDP books but none of them cover game building with MIDP other than very basic games. This book goes into some of the real issues of developing a graphical based realtime game.
If you are looking to build a game with MIDP and have no gaming experience this is a very good book to get you started.