Konfigurowanie JavaFx w argumencie VM Eclipse

After you set your user library with the required JavaFX classes, click the
dropdown menu next to the run button
Click "Run Configurations" and go to the "Arguments" tab

In the "VM arguments" box copypaste the following:
--module-path="Add\path\to\JavaFX\lib" --add-modules=javafx.controls,javafx.fxml
Endy896