How to disable scaling the UI on Windows, for Java 9 applications?

Question

There was no proper HiDPI support in Java 8.

In Java 9, JavaFx applications correctly scale to the monitor they are in. For example

Answer 1

if needed, found another couple of helpful JVM parameters from that website :

-Dsun.java2d.uiScale.enabled=false
-Dsun.java2d.win.uiScaleX=1.0 -Dsun.java2d.win.uiScaleY=1.0

Answer 2

I found this obscure option in a substance bug report. This fixes the issue for Swing applications.

-Dsun.java2d.uiScale=1.0

If you're using JavaFX you'll need

-Dprism.allowhidpi=false

Unfortunately I cannot find official documentation for either of these options