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Java™ ME Game Programming, Second Edition by Ph.D. Martin J. Wells, Ph.D. John P. Flynt

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MID Applications

Generally, a Java program written to be executed on a mobile information device is called a MIDlet. Obviously, the name is a play on “applet.” The MIDlet is subject to some rules regarding its run-time environment and packaging. The next few sections provide a general discussion of these topics. Chapter 4 shows you how to work with JAR, JAD, and other files in detail.

To develop a MIDlet, in addition to the Java file that contains the implementation of the MIDlet class, you use a manifest and a JAR file, as you do with any Java application. You add to this a Java application descriptor (JAD) file. The JAD offers a few extended configuration options as you work with the MIDlet. You use the JAD file to formally identify one or ...

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