I have hit this same problem once for the same reason Alan describes.
Ubuntu provided me with a really old EA build of 9.
/Erik
On 2018-02-15 00:05, Alan Bateman wrote:
On 15/02/2018 06:32, Ted Neward wrote:
Really?!? I thought the javac -help only listed -modulepath. Not to
disbelieve you *grin*, but are you sure? The reason I ask is (barring
some really bizarre misconfiguration) I should be using the OpenJDK9
as the boot JDK for this, and I'm getting the error.
What is your boot JDK? Any possibility that you have really old EA
build of JDK 9?