There is the GCC Java extensions, but I'd recommend that you download Sun's JDK from java.sun.com instead.
and i've Guides For java programming In windows, Can i use this guides With the JDK?
Probably not straight off. The commands are probably a bit different, since the operating systems differ so much. You might be able to figure out the differences yourself, though.
The language itself is completely the same, on the other hand.
I just don't know what u're talking about..really