This site brings us an article on getting started with J2ME development that starts with downloading and installing the tools, creating a hellow world app, and then moves on to talking about issues of running games across multiple phones. The article first appeared in a book:
If you are engaged in game development, you might want to consider using Java 2 Micro Edition. This article will help get started; soon, you'll be well on your way to building your first game. It is excerpted from J2ME Games with MIDP2, written by Carol Hamer (Apress, 2004; ISBN 1590593820).
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