JDK main-line development
Yeah weird, you can see the class for it at the OpenJDK GitHub. Taking a glance at it seems it's something to do with threading and ensuring all the VM shutdown steps are complete before actually terminating the VM?
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.
Creating custom formatter for Java
3 projects | reddit.com/r/javahelp | 15 May 2022
Project Loom preview ships in JDK 19
5 projects | news.ycombinator.com | 2 May 2022
JEP proposed to target JDK 19: 425: Virtual Threads (Preview)
1 project | reddit.com/r/java | 28 Apr 2022
Emoji rendering on macOS by JB-Dmitry
2 projects | reddit.com/r/java | 27 Apr 2022
OpenJDK 19: Do not use CPU Shares to compute active processor count
1 project | reddit.com/r/java | 20 Apr 2022