mouseevent - Dragging a window in Javafx -

i tried many other links still not getting success in dragging undecorated window in javafx.this code: >main

fxmlloader loader = new fxmlloader(getclass().getresource("videofxml.fxml")); stage.setscene(new scene( loader.load())); stage.initstyle(stagestyle.undecorated); videofxmlcontroller controller = loader.getcontroller(); controller.registerstage(stage); stage.show(); 

controller code:

public class videofxmlcontroller implements initializable {  int = 0 , j = 0;   @fxml private anchorpane basepane;  @fxml private mediaview mediaview;  @fxml private button btnext;    @fxml public pane dragnode;  public void registerstage(stage stage) {             effectutilities.makedraggable(stage, dragnode); }                 public void btnexit(actionevent event){     if(event.getsource() == btnext){         system.exit(1);     }  }         @override public void initialize(url url, resourcebundle rb) {     try {         playvideo();     } catch (malformedurlexception ex) {         logger.getlogger(videofxmlcontroller.class.getname()).log(level.severe, null, ex);     }  }    

}

effectutilities.java:

public static void makedraggable(stage stage, final pane bynode) {     final delta dragdelta = new delta();     bynode.setonmousepressed((mouseevent mouseevent) -> {                 dragdelta.x = stage.getx() - mouseevent.getscreenx();         dragdelta.y = stage.gety() - mouseevent.getscreeny();         bynode.setcursor(cursor.move);     });             bynode.setonmousereleased((mouseevent mouseevent) -> {         bynode.setcursor(cursor.hand);     });     bynode.setonmousedragged((mouseevent mouseevent) -> {         stage.setx(mouseevent.getscreenx() + dragdelta.x);         stage.sety(mouseevent.getscreeny() + dragdelta.y);     });         }     private static class delta { double x, y; 

}

i refered following link:dragging undecorated stage in javafx still not getting doing wrong.i new javafx.please give me solution.thanks in advance