jtreg under Windows?
jtreg is normally invoked by a wrapper script, written
for the Bourne family of shells. On Windows, you can use
MKS,
which uses ksh, or you can use
Cygwin, which uses ash or bash,
depending on which version you are using.
You can also start jtreg directly, with a command of
the form java -jar jtreg.jar options, but you
will still need MKS or Cygwin installed to be able to run shell tests.