JavaFX after Java 23

[Graham Norris]

For Polarbar to continue to work in future, assuming it continues to use JavaFX, the following Java options will be required:

--enable-native-access=javafx.graphics --enable-native-access=javafx.media

If these are not present, Azul Java 24 and 25 will warn about the lack of them, and at some release after that, will fail instead.

[Graham Norris]

... and if you use the WebKit Browser window stlye, you'll need --enable-native-access=javafx.web too.

[Graham Norris]

It turns out you can more conveniently just use:

--enable-native-access=javafx.graphics,javafx.media,javafx.web

Or even:

--enable-native-access=ALL-UNNAMED

The latter could be placed in the manifest file when the Polarbar jar is built instead. It does, as might be expected, re-open use of native code to more than just the parts of JavaFX which need it.

Any of them can be placed in a JDK_JAVA_OPTIONS environment variable instead of on the command line (or manifest.)

Ref for all of this: https://openjdk.org/jeps/472