Scene with Shapes Project in NetBeans IDE 8.0.1

FXMLDocument.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.shape.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>


<Group onKeyPressed="#keyHandler" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="scenewithshapes.FXMLDocumentController">
   <children>
      <Sphere layoutX="50.0" layoutY="50.0" radius="50.0" />
   </children>
</Group>