When you run
    javah -stubs
on a java class, the program creates a file "ClassName.stubs".
The programmer then has to create a .c file out of this stubs file
and remember to include "StubPreamble.h".

This is inconvenient and unnecessary -- javah could do this
automatically very easily.

Please change javah so that
    javah -stubs
generates a .c file (named ClassName.c) that already includes
StubPreamble.h.