1) A runtime environment for programming applications to run on resource-limited devices, such as PDAs or cell phones. Officially, the initials stand for
Java 2, Micro Edition, but Just Too Many Exceptions might be more accurate.
2) A cruel
joke of a runtime environment that provides poor performance, a far-too-limited API, no access to the framebuffer and is generally useless for serious programming (not that that stops anyone) and, most of the
time, is incorrectly implemented by cell
phone manufacturers.
3) The antithesis of "Write Once, Run Anywhere".