HI all!
Java implemetation on 51 seems like cinderella 's story as erick said but some guys still try to make this shoe
to fit out the 51's foot.
For now ,They try to reduce more resource (code size,ram consume) and speed up the generated code.
Andy ,I still don't clear whether they make jvm on chip or it's absolute burnable code as craig said .
but now every thing doesn't finish yet . (I hope they try to make it right soon.) so the only present advantage as you all ask is platform-independent.