Development in java Web Start

[Nawab Ahmed Siddiqui]

hi ,
I think we can also develop some application in it. I just wana ask about
it,
if yes then how ? or it is just for the deployement of already written
in
other tool or in note pad. I m studying its help and other tutorial.
Plase tell me the Healthy Stuff (URL)if development is Possible, or any Hello World Programe ???

Thanks in Advance