There are minimum resource requirements for a small computing device to run a J2ME application. First the device must have a minimum of 96 × 54 pixel display that can handle bitmapped graphics and have a way for users to input information, such as a keypad, keyboard, or touch screen. At least 128 kilobytes (KB) of nonvolatile memory is necessary to run Mobile Information Device (MID), and 8KB of nonvolatile memory is needed for storage of persistent application data.
To run JVM, 32KB of volatile memory must be available. The device must also provide two-way network connectivity. The native operating system must implement exception handling, process interrupts, be able to run the JVM, and provide schedule capabilities. Furthermore, all user input to the operating system must be forwarded to the JVM, otherwise the device cannot run a J2ME application.
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