How to use

visibleProperty

method

in

javafx.scene.control.ScrollBar

private void unbindScrollBar(ScrollBar bar) {
  bar.maxProperty().unbind();
  bar.unitIncrementProperty().unbind();
  bar.blockIncrementProperty().unbind();
  bar.visibleProperty().unbind();
}

public AquaScrollBarSkin(ScrollBar scrollBar) {
  super(scrollBar);
  if (getNode().getParent() instanceof ScrollPane) {
    fadeable = true;
  }
  scrollBar.setVisible(!fadeable);
  registerChangeListener(scrollBar.hoverProperty(), "HOVER");
  registerChangeListener(scrollBar.valueProperty(), "VALUE");
  registerChangeListener(scrollBar.visibleProperty(), "VISIBLE");
}

);
scrollBar.visibleProperty().addListener((observable, wasVisible, isVisible) -> {
  if (!isVisible) {

shouldDisplayVertical.addListener(obs -> Platform.runLater(this::requestLayout));
hbar.visibleProperty().bind(shouldDisplayHorizontal);
vbar.visibleProperty().bind(shouldDisplayVertical);