Hello, Bob!
Tapestry 5.8 should work with Java 8. It's compiled with that version as
both target and source. I do know a large webapp which runs on Java 8 and
Tapestry 5.7.3 (which is basically the same as 5.8.0 besides the later
version having a few new features and bug fixes).
On Fri, Feb 4,
I could probably figure this out myself eventually, but does anyone know
whether the new Tapestry version 5.8 works with a Java 8 runtime? The
https://tapestry.apache.org/supported-environments-and-versions.html page
doesn't quite say.