title: Exception in Application start method java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
body: <p>I am having trouble finding what to fix in my fxml/java code, this is the whole error:</p>
  
  <blockquote>
    <p>java.lang.reflect.InvocationTargetException
        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 com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
        at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
        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.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
         Caused by: java.lang.RuntimeException: Exception in Application start method
        at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$154(LauncherImpl.java:182)
        at java.lang.Thread.run(Thread.java:748)
           Caused by: javafx.fxml.LoadException: No controller specified.
          /Volumes/OSTIUM/Labs/CAPSTONE/IceCreamScene.fxml:23
        at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2597)
        at javafx.fxml.FXMLLoader.access$100(FXMLLoader.java:103)
        at javafx.fxml.FXMLLoader$Element.getControllerMethodHandle(FXMLLoader.java:557)
        at javafx.fxml.FXMLLoader$Element.processEventHandlerAttributes(FXMLLoader.java:599)
        at javafx.fxml.FXMLLoader$ValueElement.processEndElement(FXMLLoader.java:770)
        at javafx.fxml.FXMLLoader.processEndElement(FXMLLoader.java:2823)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2532)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
        at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
        at IceCreamRUN.start(IceCreamRUN.java:11)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:863)
        at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
        at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)</p>
  </blockquote>
  
  <p>I have been looking throught the 'RUN' and 'Control' code to try anf find the mistake and im not finding anything.These are the code for the 'RUN' program and the 'Control'</p>
  
  <pre><code>import javafx.application.Application;
  import javafx.fxml.FXMLLoader;
  import javafx.scene.Parent;
  import javafx.scene.Scene;
  import javafx.stage.Stage;
  
  public class IceCreamRUN extends Application
   {
    public void start (Stage stage ) throws Exception
     {
    Parent parent = 
    FXMLLoader.load(getClass().getResource("IceCreamScene.fxml"));
    Scene scene = new Scene(parent);
    stage.setTitle("Patino's Ice Cream Shop");
    stage.setScene(scene);
    stage.show();
  
     }
    public static void main(String [] args)
     {
    launch(args);
     }
  }
  </code></pre>
  
  <hr>
  
  <pre><code>import javafx.fxml.FXML;
  import javafx.scene.control.Button;
  import javafx.scene.control.CheckBox;
  import javafx.scene.control.RadioButton;
  import javafx.scene.control.ToggleGroup;
  import javafx.scene.control.Alert;
  import javafx.scene.control.Alert.AlertType;
  import java.io.*;
  import java.util.Scanner;
  
   public class IceCreamControl {
  
  //declarations
  
  @FXML
  private RadioButton Vanilla;
  
  @FXML
  private ToggleGroup FlavorGroup;
  
  @FXML
  private RadioButton Choc;
  
  @FXML
  private RadioButton StrwBerry;
  
  @FXML
  private Button Save;
  
  @FXML
  private Button ReDo;
  
  @FXML
  private Button Calculate;
  
  @FXML
  private CheckBox Nuts;
  
  @FXML
  private CheckBox Cherries;
  
  double creamcost = 0.0;
  double extra = 0.0;
  
  //processing
  
  @FXML
  void CalculateListener() 
  {
        double sub, tax, total;
        double taxRate = 0.06;
  
        sub = VanillaListener() + ChocolateListener() + 
                  StrawberryListener() 
                     + ExtraListener();
        tax = sub * taxRate;
        total = sub + tax;
  
        Alert alert = new Alert (AlertType.INFORMATION);
        alert.setHeaderText(String.format("Total: $ %.2f", total));
        alert.setContentText(String.format("Order: $ %.2f\nTax: %.2f\n 
        Total: $ %.2f", sub, tax, total));
        alert.setTitle("Your Order");
        alert.showAndWait();
    }
  
  @FXML
  double ExtraListener() 
  {
        extra = 0.0;
        if(Cherries.isSelected())
           extra += 0.50;
        if(Nuts.isSelected())
           extra += 0.50;
  
        return extra;
  }
  
  @FXML
  void ReDoListener() throws IOException 
  {
     String order;
     creamcost = 0.0;
     extra = 0.0;
     Nuts.setSelected(false);
     Cherries.setSelected(false);
     Vanilla.setSelected(false);
     Choc.setSelected(false);
     StrwBerry.setSelected(false);
  
     File file = new File ("IcecreamSave.txt");
     Scanner inputFile = new Scanner (file);
  
     while(inputFile.hasNext())
        {
           order = inputFile.nextLine();
           if (order.charAt(0) == 'v')
              {
                 Vanilla.setSelected(true);
                 creamcost = 2.25;
              }
           if (order.charAt(0) == 'c')
              {
                 Choc.setSelected(true);
                 creamcost = 2.25;
              }
           if (order.charAt(0) == 's')
              {
                 StrwBerry.setSelected(true);
                 creamcost = 2.25;
              }
        }
     inputFile.close();
  }
  
  @FXML
  void SaveListener() throws IOException 
  {
  PrintWriter outputfile = new PrintWriter ("IcecreamSave.txt");
  
  if(Vanilla.isSelected())
    outputfile.println("vanilla"); 
  if(Choc.isSelected())
    outputfile.println("chocolate");
  if(StrwBerry.isSelected())
    outputfile.println("strawberry");
  if (Nuts.isSelected())
    outputfile.println("nuts");
  if(Cherries.isSelected())
    outputfile.println("cherry");
  
  outputfile.close();
  }
  
  @FXML
  double StrawberryListener() 
  {
  if (StrwBerry.isSelected())
      creamcost = 2.25;
     else creamcost = 0.0;
    return creamcost;
  }
  
  @FXML
  double VanillaListener() 
  {
  if (Vanilla.isSelected())
      creamcost = 2.25;
     else creamcost = 0.0;
    return creamcost;
  }
  
  @FXML
  double ChocolateListener() 
  {
  if (Choc.isSelected())
      creamcost = 2.25;
     else creamcost = 0.0;
    return creamcost;
     }
  
  }
  </code></pre>
  
  <p>I would appreciate help finding the mistake immensely.</p>
  
  <hr>
  
  <hr>
  
  <hr>
  
  <p>Update: I fixed the location but got a new error;</p>
  
  <pre><code> &gt; Aug 15, 2018 1:28:21 PM javafx.fxml.FXMLLoader$ValueElement 
   processValue
   WARNING: Loading FXML document with JavaFX API of version 10.0.1 by 
   JavaFX runtime of version 8.0.171
   Exception in Application start method
   java.lang.reflect.InvocationTargetException
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at 
  </code></pre>
  
  <p>sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:     62)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp     l.java:43)
       at java.lang.reflect.Method.invoke(Method.java:498)
       at 
  com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherI     mpl.java:389)
      at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
      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.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
  Caused by: java.lang.RuntimeException: Exception in Application start method
      at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
      at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$154(LauncherImpl.java:182)
      at java.lang.Thread.run(Thread.java:748)
  Caused by: javafx.fxml.LoadException: No controller specified.
  /Volumes/OSTIUM/Labs/CAPSTONE/IceCreamScene.fxml:22</p>
  
  <pre><code>at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2597)
  at javafx.fxml.FXMLLoader.access$100(FXMLLoader.java:103)
  at javafx.fxml.FXMLLoader$Element.getControllerMethodHandle(FXMLLoader.java:557)
  at javafx.fxml.FXMLLoader$Element.processEventHandlerAttributes(FXMLLoader.java:599)
  at javafx.fxml.FXMLLoader$ValueElement.processEndElement(FXMLLoader.java:770)
  at javafx.fxml.FXMLLoader.processEndElement(FXMLLoader.java:2823)
  at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2532)
  at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
  at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
  at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
  at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
  at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
  at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
  at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
  at IceCreamRUN.start(IceCreamRUN.java:11)
  at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:863)
  at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
  at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
  at java.security.AccessController.doPrivileged(Native Method)
  at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
  at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
  </code></pre>
  
  <p>Exception running application IceCreamRUN</p>