JavaFX: FXML: How to make the child to extend its size to fit the parent pane?

Question

I have managed to load a child fxml(sub UI) under a parent fxml (mainMenu UI). I have created an AnchorPane with id \"mainContent\". This pane is bound to 4 sides and change

Answer 1

If you set the static methods setTopAnchor( child, value ), setBottomAnchor( ... ), setLeftAnchor( ... ), setRightAnchor( ... ) of class AnchorPane to 0.0, the child Node will get stretched to the full extend of the parent AnchorPane.

Documentation Link: AnchorPane

edit: in the documentation link you can also see how you can set these values in your java code.

FXML example: