Answers for "if menu hover zoom in css javafx"

jquery hover and hover out

$( selector ).mouseenter( handlerIn ).mouseleave( handlerOut );

show menuitem when menu hovered javafx

HBox container = (HBox) menubar.lookup("HBox");
		for(int i=0;i<container.getChildren().size();i++) {
			Node parentNode = container.getChildren().get(i);
			Menu menu = menubar.getMenus().get(i);
			parentNode.setOnMouseMoved(e->{
				menu.show();
			});
		}