Just a sample to start with Haxe + JavaFX
It uses Haxe 4 syntax and latest hxjava https://github.com/HaxeFoundation/hxjava (from Jan 17, 2019);
To run this sample, you need to download OpenJFX SDK for your system here: https://gluonhq.com/products/javafx/
And then extract .jar libraries from SDK_FOLDER/lib into openjfx folder which is in the root of this sample.
Simply run haxe build.hxml to run a sample.