I'm +1 for Java 11, and to go along with your plan. First message to users 
with our intention, and asking for any known issues from their side.

Bruno

    On Saturday, 2 January 2021, 1:13:39 am NZDT, Andy Seaborne 
<[email protected]> wrote:  
 
 Should we switch to Java11?

There are the usually issues of moving to a newer Java. There seems 
likely to be an emerging bimodal distribution of systems remaining with 
Java8 and systems moving to Java11 and Java 17 (likely an LTS - 
September 2021).

The question is how many systems would upgrade their Jena version and 
are restricted to Java8 (and why!).

Java is evolving to better fit in the new tech landscape (e.g. better 
container usage), more compact strings (significant for Jena), and 
JDK-provided HTTP/2.

Some dependences or potential dependencies are Java11:

Titanium - for JSON-LD 1.1 (JENA-1948 - titanium-json-ld )

Eclipse Jetty 10 and 11 now depend on Java11.

(the difference between Jetty 10 and Jetty 11 is that Jetty 10 uses the 
package root name "javax..." whereas Jetty11 uses package route 
"jakarta...")

Proposal:

1/ Ask on users@ -- what we need is "new information" such as "I am 
blocked from updating Java because ...", not "I haven't got round to it".

2/ Switch to Java11 for the next release but not make so many changes 
that we can't easily go back to Java8.

    Andy
  

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