[R-SIG-Mac] Java 17 builds

[Prof Brian Ripley]

The current version of Java is 17: this has 'long term support' and is 
the first to officially support M1 macs.

Mac-friendly installers are now available from https://adoptium.net for 
Intel (which they call x64) and M1 (aarch64).  Unlike builds available 
from jdk.java.net and Zulu these install into Apple-standard locations 
and so are found by /usr/bin/java.

Not all CRAN packages work with Java 17: there are additional security 
measures and XLConnect excludes it.  The maintainers have been informed 
so hopefully this will change soon.

On Intel I would keep on using Java 11 (also available from Adoptium, 
formerly AdoptOpenJDK).  On M1, the Adoptium build of 17 makes things 
much cleaner.

-- 
Brian D. Ripley,                  ripley using stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford