Hallo miteinander,
ich bekomme beim starten dieses JavaFx Programms folgende Fehlermeldung.
Da ich sehr neu bei JavaFx bin und auch bei Google nichts passendes fand, bin ich nun hier und bitte darum sich folgendes mal anzuschauen. Ich werde daraus leider nicht schlau.
Hier die Main:
Controller:
FXMLDokument:
ich bekomme beim starten dieses JavaFx Programms folgende Fehlermeldung.
Da ich sehr neu bei JavaFx bin und auch bei Google nichts passendes fand, bin ich nun hier und bitte darum sich folgendes mal anzuschauen. Ich werde daraus leider nicht schlau.
Code:
Executing C:\Users\danie\Documents\NetBeansProjects\JavaFXApplication3\dist\run1889442468\JavaFXApplication3.jar using platform C:\Program Files (x86)\Java\jdk1.8.0_74\jre/bin/java
Exception in Application start method
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$155(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: javafx.fxml.LoadException:
file:/C:/Users/danie/Documents/NetBeansProjects/JavaFXApplication3/dist/run1889442468/JavaFXApplication3.jar!/javafxapplication3/FXMLDocument.fxml:10
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
at javafxapplication3.JavaFXApplication3.start(JavaFXApplication3.java:22)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
... 1 more
Caused by: java.lang.NullPointerException
at javafxapplication3.FXMLDocumentController.<init>(FXMLDocumentController.java:54)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at sun.reflect.misc.ReflectUtil.newInstance(ReflectUtil.java:51)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:927)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:971)
at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:220)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:744)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
... 17 more
Exception running application javafxapplication3.JavaFXApplication3
Java Result: 1
Hier die Main:
Code:
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class JavaFXApplication3 extends Application {
@Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
Controller:
Code:
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.MenuBar;
import javafx.scene.control.SingleSelectionModel;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
/**
*
* @author danie
*/
public class FXMLDocumentController implements Initializable {
@FXML
private TextField tf1;
@FXML
private Label lb1;
@FXML
private ComboBox box1;
@FXML
private Button b1;
@FXML
private TabPane tb;
@FXML
private Tab main;
@FXML
private Tab kasse;
@FXML
private Tab spind;
@FXML
private Tab cafe;
@FXML
private Tab angestellter;
SingleSelectionModel<Tab> selectionModel = tb.getSelectionModel();
@FXML
private MenuBar mb;
@FXML
private void handleButtonAction(ActionEvent event){
if (box1.getValue().equals("Kasse")) {
selectionModel.select(kasse);
}
}
@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
}
FXMLDokument:
Code:
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.collections.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" prefHeight="383.0" prefWidth="585.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="javafxapplication3.FXMLDocumentController">
<children>
<TabPane fx:id="tb" layoutX="0.0" layoutY="31.0" prefHeight="352.0" prefWidth="585.0" tabClosingPolicy="UNAVAILABLE">
<tabs>
<Tab fx:id="main" text="Main">
<content>
<AnchorPane id="Content" minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0">
<children>
<ComboBox fx:id="box1" layoutX="224.0" layoutY="103.0" prefHeight="21.0" prefWidth="137.0" promptText="Auswählen...">
<items>
<FXCollections fx:factory="observableArrayList">
<String fx:value="Kasse" />
<String fx:value="Spind" />
<String fx:value="Cafeteria" />
<String fx:value="Angestellter" />
</FXCollections>
</items>
</ComboBox>
<TextField fx:id="tf1" layoutX="193.0" layoutY="186.0" prefWidth="200.0" />
<Label fx:id="lb1" layoutX="288.0" layoutY="153.0" text="IP" />
<Button fx:id="b1" layoutX="260.0" layoutY="244.0" mnemonicParsing="false" onAction="#handleButtonAction" text="Connect" />
</children>
</AnchorPane>
</content>
</Tab>
<Tab fx:id="kasse" disable="true" text="Kasse">
<content>
<AnchorPane id="Content" minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" />
</content>
</Tab>
<Tab fx:id="spind" disable="true" text="Spind">
<content>
<AnchorPane id="Content" minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" />
</content>
</Tab>
<Tab fx:id="cafe" disable="true" text="Cafeteria">
<content>
<AnchorPane id="Content" minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" />
</content>
</Tab>
<Tab fx:id="angestellter" disable="true" text="Angestellter">
<content>
<AnchorPane id="Content" minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" />
</content>
</Tab>
</tabs>
</TabPane>
<MenuBar fx:id="mb" layoutX="0.0" layoutY="0.0" prefHeight="31.000099999997474" prefWidth="585.0" useSystemMenuBar="true">
<menus>
<Menu mnemonicParsing="false" text="File">
<items>
<MenuItem mnemonicParsing="false" text="Close" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Edit">
<items>
<MenuItem mnemonicParsing="false" text="Delete" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Help">
<items>
<MenuItem mnemonicParsing="false" text="About" />
</items>
</Menu>
</menus>
</MenuBar>
</children>
</AnchorPane>