I’ve also updated https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Installation/#HHardwareandSoftwarerequirements to point to https://dev.xwiki.org/xwiki/bin/view/Community/SupportStrategy/JavaSupportStrategy/ and added a table of supported java versions per XWiki versions.
I don’t think we can really recommend one VS the others but I guess we could suggest adoptopenjdk to users who really don’t have any clue on what to choose since it’s more or less supposed to be the most standard one (at least that’s the goal) and provide many ways to install it.
I personally use whatever I get from the Debian repositories generally (and that’s usually what you get when you install the Debian package without doing anything special about Java).
By the way shouldn’t we modify a bit https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-tools/xwiki-platform-tool-jetty/xwiki-platform-tool-jetty-resources/src/main/resources/start_xwiki.sh#L207 if we are going to support and recommend Java 11 from what I understand ?
Good catch. I’ll work on it. Thanks