I am making a JavaFX app. I have create a Menuitem About. Upon clicking on the About Menuitem it will display a new window with some info about my app. The window is a Anchor Pane with custom close button. I have set the stage undercoated at run time. I want to close this window without closing my main application. I don't want to set its visibility turn off on method call. I see some solution in net like Window existingWindow = ((Node) event.getSource()).getScene().getWindow(); but i can't use this as am getting error similar to this Menu item not cast node javafx scene. How can I achieve this goal?