JavaFX adding custom item to Pane -

i have fxml file has pane 1 of it's entries, used output of our program. have pane contain htmleditor. i'm little bit confused @ accomplish this. class uses singleton pattern recommended, , can call controller pane.

then find myself having create inner class, since htmleditor not node. extended rectangle this, , use getchildren.add(htmleditorwrapper) try , add node. of course, htmleditor not show when run program.

the gist of question: how add htmleditor pane (which in fxml file)?

import javafx.scene.layout.pane; import javafx.scene.shape.rectangle; import javafx.scene.web.htmleditor;  /**  * gets controller's outputpane (the console in gui)  * @author matt  *  */ public class outputpanel{      private static pane pane;     private static htmleditorwrap htmleditor = new htmleditorwrap();      private static final outputpanel outputpanel = new outputpanel();      private outputpanel(){}      public static outputpanel getinstance(){         pane = controller.getoutputpane();         pane.getchildren().add(htmleditor);         return outputpanel;     }      public void clear(){         //htmleditor.sethtmltext();     }      public static void write(string text){         htmleditor.sethtmltext(text + "\n");     }  }  class htmleditorwrap extends rectangle{      htmleditor htmleditor = new htmleditor();      public htmleditorwrap(){         htmleditor.setlayoutx(200);         htmleditor.setlayouty(200);         htmleditor.sethtmltext("testing");     }      public void sethtmltext(string text){         htmleditor.sethtmltext(text);     }  } 

actually htmleditor node. try adding directly. , how did obtain editor extending rectangle?