Not supported in Java 11

[brundonsmith]

The installation instructions refer to locating tools.jar, but it appears to have been removed in JDK 11:
https://stackoverflow.com/questions/53707666/how-to-get-tools-jar-for-openjdk-11-on-windows

[MattMoranJava]

Bump! I'm having the same difficulties. Back to emacs for now. What specifically does it need from tools.jar? Have these things been removed or are they elsewhere in Java 11+?