title: Load exception while getting string javafx fxml
body: <p>I'm trying to pass a simple String to a new java file but I get an error stating
  <code>JavaFX.fxml.LoadException:</code></p>
  
  <p>Where <code>moveId</code> is a <code>public String</code> in main.java, <br> and the method <code>updateEvent</code> is called on a button click event (<code>onClick</code>)</p>
  
  <h1>Main.Java</h1>
  
  <pre><code>public void updateEvent(ActionEvent event) {
  try{
  
      FXMLLoader fxmlLoad = new 
      FXMLLoader(getClass().getResource("change_relocationDetails.fxml"));
      Parent root = (Parent) fxmlLoad.load();
      Stage stage = new Stage();
      stage.setScene(new Scene(root));
      stage.setTitle("Update Relocation Details Of : "+moveID);
      stage.show();
    }
    catch(Exception e){
          System.out.println(e);
  
     }        
   }
  
  
  public String get_MoveId(){
  
          return moveID;
      }
  
   private boolean validateID() {
  
     moveID=move_id.getText();
  
   }
  </code></pre>
  
  <h1>Change_relocationDetailsController.java</h1>
  
  <pre><code>public class Change_relocationDetailsController implements Initializable {
  
  /**
   * Initializes the controller class.
   */
  public String moveID;
  @FXML
  private TextField move_id;
  
  @Override
  public void initialize(URL url, ResourceBundle rb) {
      // TODO
  
      ChangeOrDeleteController change_delete = new  ChangeOrDeleteController();
    moveID = change_delete.get_MoveId();
     move_id.setDisable(true);
  
      }    
  
   }
  </code></pre>
  
  <h1>Full stacktrace</h1>
  
  <pre><code> at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
      at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
      at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
      at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
      at pp01_cwk03.ChangeOrDeleteController.updateEvent(ChangeOrDeleteController.java:60)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
      at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
      at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
      at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
      at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
      at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
      at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
      at javafx.event.Event.fireEvent(Event.java:198)
      at javafx.scene.Node.fireEvent(Node.java:8413)
      at javafx.scene.control.Button.fire(Button.java:185)
      at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
      at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
      at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
      at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
      at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
      at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
      at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
      at javafx.event.Event.fireEvent(Event.java:198)
      at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
      at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
      at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
      at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
      at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:381)
      at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
      at java.security.AccessController.doPrivileged(Native Method)
      at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java:417)
      at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
      at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:416)
      at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
      at com.sun.glass.ui.View.notifyMouse(View.java:937)
      at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
      at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
      at java.lang.Thread.run(Thread.java:748)
  Caused by: java.lang.NullPointerException
      at pp01_cwk03.ChangeOrDeleteController.get_MoveId(ChangeOrDeleteController.java:79)
      at pp01_cwk03.Change_relocationDetailsController.initialize(Change_relocationDetailsController.java:33)
      at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
      ... 61 more
  </code></pre>