Develop Reference

fx:include with "resources" throws MissingResourceException but works in Java Code

I'm trying to use the resource tag inside fx:include in a FXML file.
What I don't understand is, that loading the resource bundle manually with ResourceBundle.getBundle() works completely fine.
I already tried a lot of variants in the fxml like:
"lang_challenges"
"wand555/github/io/challengesreworkedgui/lang_challenges"
package wand555.github.io.challengesreworkedgui;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.Set;
public class ChallengeApplication extends Application {
#Override
public void start(Stage stage) throws IOException {
ResourceBundle.clearCache();
ResourceBundle bundle = new ResourceBundleWrapper(ResourceBundle.getBundle("wand555/github/io/challengesreworkedgui/lang_challenges"));
System.out.println(bundle.getString("challenge.name")); // outputs "abc"
FXMLLoader loader = new FXMLLoader(ChallengeApplication.class.getResource("overview.fxml"), bundle);
Parent root = loader.load();
Scene scene = new Scene(root, 1000, 1000);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch();
}
// this class effectively does nothing, but it will be loaded by the
// application class loader
// instead of the system class loader.
private static class ResourceBundleWrapper extends ResourceBundle {
private final ResourceBundle bundle;
ResourceBundleWrapper(ResourceBundle bundle) {
this.bundle = bundle;
}
#Override
protected Object handleGetObject(String key) {
return bundle.getObject(key);
}
#Override
public Enumeration<String> getKeys() {
return bundle.getKeys();
}
#Override
public boolean containsKey(String key) {
return bundle.containsKey(key);
}
#Override
public Locale getLocale() {
return bundle.getLocale();
}
#Override
public Set<String> keySet() {
return bundle.keySet();
}
}
}
overview.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<AnchorPane prefHeight="500.0" xmlns="http://javafx.com/javafx/19" xmlns:fx="http://javafx.com/fxml/1" fx:controller="wand555.github.io.challengesreworkedgui.controllers.OverviewController">
<children>
<VBox>
<children>
<StackPane alignment="CENTER_LEFT">
<children>
<Button fx:id="exportButton" mnemonicParsing="false" onAction="#onExport" text="Export" />
</children>
</StackPane>
<HBox prefHeight="100.0" prefWidth="200.0" spacing="25.0">
<children>
<fx:include fx:id="challengesOverview" source="challenges/challenges_overview.fxml" resources="lang_challenges" charset="utf-8"/>
<Separator orientation="VERTICAL" prefHeight="200.0" />
<fx:include source="goals/goal_overview.fxml" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
</children>
</HBox>
</children>
</VBox>
</children>
</AnchorPane>
The lang_challenges.properties contains a single key-value pair
challenge.name=abc
The `lang_challenges_de.properties' has the same content
challenge.name=abc
And this is the error message I'm getting
Exception in Application start method
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at javafx.graphics#19/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:465)
at javafx.graphics#19/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:364)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1082)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics#19/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:901)
at javafx.graphics#19/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:196)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: javafx.fxml.LoadException:
/Users/felixnaumann/Documents/ChallengesReworked/ChallengesReworkedGUI/target/classes/wand555/github/io/challengesreworkedgui/overview.fxml:21
at javafx.fxml#19/javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2707)
at javafx.fxml#19/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2685)
at javafx.fxml#19/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
at javafx.fxml#19/javafx.fxml.FXMLLoader.load(FXMLLoader.java:2516)
at challenges.reworked.gui/wand555.github.io.challengesreworkedgui.ChallengeApplication.start(ChallengeApplication.java:22)
at javafx.graphics#19/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:847)
at javafx.graphics#19/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:484)
at javafx.graphics#19/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at javafx.graphics#19/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
at javafx.graphics#19/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
Caused by: java.util.MissingResourceException: Can't find bundle for base name lang_challenges, locale de_DE
at java.base/java.util.ResourceBundle.throwMissingResourceException(ResourceBundle.java:2045)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1683)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1575)
at java.base/java.util.ResourceBundle.getBundle(ResourceBundle.java:1280)
at javafx.fxml#19/javafx.fxml.FXMLLoader$IncludeElement.processAttribute(FXMLLoader.java:1100)
at javafx.fxml#19/javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:230)
at javafx.fxml#19/javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:755)
at javafx.fxml#19/javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2808)
at javafx.fxml#19/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2634)
... 9 more
Exception running application wand555.github.io.challengesreworkedgui.ChallengeApplication

Whew, finally figured it out after digging deep into the source code of ResourceBundle and ClassLoader.
How to fix it:
Really easy way:
Put your .properties files at the root of the resources folder. Then use it inside fxml
<fx:include source="second.fxml" resources="second_bundle"/>
and then everything should work fine.
However this approach is not suitable for larger projects which subdivide the resource bundles into different packages.
Using sub-packages in resources package
Give the fully qualified path name in the resources tag.
So for example if your package structure from src is com/example/demo/ (also in the resources folder) then use
<fx:include source="second.fxml" resources="com/example/demo/second_bundle"/>
But we are not done yet. You need to open the package to all modules in the module-info.java, explicitly using
opens com.example.demo to javafx.fxml;
does not work.
Instead you need to write
opens com.example.demo;
My two cents
Honestly to me this sounds like a bug.
I debugged the entire loading process and when the second_bundle is loaded from inside the fxml file, the caller module is javafx.fxml. And as the java doc for getResourceAsStream (which is internally called when loading) states:
A package name is derived from the resource name. If the package name is a package in the module then the resource can only be located by the caller of this method when the package is open to at least the caller's module. If the resource is not in a package in the module then the resource is not encapsulated.
So in theory opening your package to just javafx.fxml should work, but it doesn't...
Full demo project
This demo project uses sub-packages.
Project structure:
HelloApplication:
public class HelloApplication extends Application {
#Override
public void start(Stage stage) throws IOException {
ResourceBundle bundle = new ResourceBundleWrapper(ResourceBundle.getBundle("test_bundle"));
System.out.println(bundle.getString("first.button")); // outputs "English/Deutsch"
FXMLLoader fxmlLoader = new FXMLLoader(HelloApplication.class.getResource("first.fxml"), bundle);
Scene scene = new Scene(fxmlLoader.load(), 320, 240);
stage.setTitle("Hello!");
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch();
}
// this class effectively does nothing, but it will be loaded by the
// application class loader
// instead of the system class loader.
private static class ResourceBundleWrapper extends ResourceBundle {
private final ResourceBundle bundle;
ResourceBundleWrapper(ResourceBundle bundle) {
this.bundle = bundle;
}
#Override
protected Object handleGetObject(String key) {
return bundle.getObject(key);
}
#Override
public Enumeration<String> getKeys() {
return bundle.getKeys();
}
#Override
public boolean containsKey(String key) {
return bundle.containsKey(key);
}
#Override
public Locale getLocale() {
return bundle.getLocale();
}
#Override
public Set<String> keySet() {
return bundle.keySet();
}
}
}
first.fxml:
<VBox alignment="CENTER" spacing="20.0" xmlns:fx="http://javafx.com/fxml"
fx:controller="com.example.demo.HelloController">
<padding>
<Insets bottom="20.0" left="20.0" right="20.0" top="20.0"/>
</padding>
<Label fx:id="welcomeText"/>
<Button text="%first.button" onAction="#onHelloButtonClick"/>
<fx:include source="second.fxml" resources="com/example/demo/second_bundle"/>
</VBox>
second.fxml:
<VBox alignment="CENTER" spacing="20.0" xmlns:fx="http://javafx.com/fxml">
<padding>
<Insets bottom="20.0" left="20.0" right="20.0" top="20.0"/>
</padding>
<Label fx:id="welcomeText"/>
<Button text="%second.button"/>
</VBox>
test_bundle.properties:
first.button=English
second_bundle.properties:
second.button=Hello
module-info.java:
module com.example.demo {
requires javafx.controls;
requires javafx.fxml;
opens com.example.demo;
exports com.example.demo;
}

JavaFX 8: Custom controller from an inner class

The Problem
I am getting a ClassNotFoundException when trying to use the custom controller inside Joystick.java.
Here is my file hierarchy:
--view
----MainWindow.java
----mainWindow.fxml
----Joystick
------Joystick.java
------joystick.fxml
In mainWindow.fxml, I have the lines:
<?import view.Joystick.Joystick?>
...
<Joystick fx:id="manualJsk" layoutX="459.0" layoutY="195.0" />
I want to display my custom controller, but I keep getting the ClassNotFoundException, despite importing it.
Interestingly, everything works if I move the file to the view package:
--view
----MainWindow.java
----mainWindow.fxml
----Joystick.java
----Joystick
------joystick.fxml
... which makes me think the import is bad. Why could that be?
The Exception
java.lang.ClassNotFoundException: view.Joystick$Joystick
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at javafx.fxml/javafx.fxml.FXMLLoader.loadTypeForPackage(FXMLLoader.java:2931)
at javafx.fxml/javafx.fxml.FXMLLoader.loadType(FXMLLoader.java:2920)
at javafx.fxml/javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2861)
... 15 more
Edit:
Joystick Code:
public class Joystick extends Pane {
public Joystick() {
super();
FXMLLoader loader = new FXMLLoader();
loader.setLocation(getClass().getResource("joystick.fxml"));
loader.setRoot(this);
try {
loader.load();
} catch (IOException e) {
e.printStackTrace();
}
}
}
joystick.fxml
<fx:root xmlns:fx="http://javafx.com/fxml" type="javafx.scene.layout.Pane">
<children>
<Button text="Click Me"/>
</children>
</fx:root>

NullPoinerException in javafx when looking up objects

I have three ellipses that I need to reference in my FXML Controller:
<Ellipse fx:id="selectorontop" id="selectorontop" fill="WHITE" layoutX="121.0" layoutY="101.0" radiusX="14.0" radiusY="27.0" stroke="WHITE" strokeType="INSIDE" style="-fx-opacity: 70%;" visible="false" />
<Ellipse fx:id="selectoronmiddle" id="selectoronmiddle" fill="WHITE" layoutX="121.0" layoutY="168.0" radiusX="14.0" radiusY="27.0" stroke="WHITE" strokeType="INSIDE" style="-fx-opacity: 70%;" visible="false" />
<Ellipse fx:id="selectoronbottom" id="selectoronbottom" fill="WHITE" layoutX="120.0" layoutY="466.0" radiusX="14.0" radiusY="27.0" stroke="WHITE" strokeType="INSIDE" style="-fx-opacity: 70%;" visible="false" />
The scene is passed to the controller after it is created:
public class QuickCopy extends Application {
#Override
public void start(Stage stage) throws Exception {
FXMLLoader loader = new FXMLLoader(getClass().getResource("Main.fxml"));
AnchorPane root = (AnchorPane)loader.load();
Scene scene = new Scene(root);
stage.setScene(scene);
stage.sizeToScene();
stage.setResizable(false);
stage.show();
MainController controller = (MainController)loader.getController();
controller.sendScene(scene);
System.out.println("new: " +scene.lookup("selectorontop"));
}
The scene is received by the controller, yet the result of the lookup is still "null", both in the main Java file (seen above), and in the Controller, and I can't figure out why.
Thanks in advance

The selector you're using selects by type, not by id. It selects nodes of type selectorontop and I'm pretty sure this type doesn't exist. (At least there are no nodes of this type in the scene.)
You need to use the proper CSS selector. In this case you need to use #selectorontop to select by id:
System.out.println("new: " +scene.lookup("#selectorontop"));

Error creating a custom FXML loader in Spring

I've been trying to move my JavaFx application to Spring to make use of dependency injecton. The project has become too big to move items between classes manually.
The code does not show any red error highlights on my netbeans IDE, but when I run I keep getting this error:
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController' defined in class wakiliproject.controllerinjection.SampleAppFactory: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public wakiliproject.controllerinjection.controllers.HomeController wakiliproject.controllerinjection.SampleAppFactory.homeController() throws java.io.IOException] threw exception; nested exception is javafx.fxml.LoadException: Base location is undefined.
I have it like this:
public class SampleApp extends Application {
public static void main(String[] args) {
launch(args);
}
public void start(Stage stage) throws Exception {
AnnotationConfigApplicationContext context
= new AnnotationConfigApplicationContext(SampleAppFactory.class);
Group box = new Group();
HomeController homeController = context.getBean(HomeController.class);
box.getChildren().add(homeController.getView());
Scene scene = new Scene(box, 600, 200);
stage.setScene(scene);
stage.setTitle("JFX2.0 Sprung");
stage.show();
}
}
--
#Configuration
public class SampleAppFactory {
#Bean
public HomeController homeController() throws IOException {
return (HomeController) loadController("/resources/fxml/Home.fxml");
}
protected Object loadController(String url) throws IOException {
InputStream fxmlStream = null;
try {
fxmlStream = getClass().getResourceAsStream(url);
FXMLLoader loader = new FXMLLoader();
loader.load(fxmlStream);
return loader.getController();
} finally {
if (fxmlStream != null) {
fxmlStream.close();
}
}
}
}
--
public class HomeController {
#FXML
private AnchorPane view;
public AnchorPane getView() {
return view;
}
}
An extract of the FXML file looks something like this:
<?xml version="1.0" encoding="UTF-8"?>
<AnchorPane fx:id="view" prefHeight="654.0" prefWidth="900.0" styleClass="AnchorPane" visible="true" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="wakiliproject.controllerinjection.controllers.HomeController">
<children>
<Pane id="wrapperPane" prefHeight="600.0" prefWidth="700.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<children>
<Pane id="top" layoutX="-1.0" layoutY="3.0" prefWidth="879.0" styleClass="appNav" visible="true">
<children>
<HBox id="HBox" alignment="CENTER" layoutX="12.0" layoutY="6.0" spacing="0.0">
<children>
<Label prefHeight="32.0" prefWidth="32.0" styleClass="titleBarHome" />
<Label prefHeight="32.0" prefWidth="32.0" styleClass="titleBarPublisher" />
</children>
</HBox>

It looks like you need to set the location of your FXML file on the FXMLLoader. This can be the case if, for example, your FXML file requires resolving relative locations. Using the FXMLLoader.load(URL) method does not set the location. Try
protected Object loadController(String url) throws IOException {
FXMLLoader loader = new FXMLLoader(getClass().getResource(url));
loader.load();
return loader.getController();
}
instead of the current implementation you have.
Incidentally, have you looked at afterburner.fx as a (much more lightweight) alternative to Spring for dependency injection in JavaFX?

JavaFx 2.x TableView binding columns

Hello i`m trying to populate my JavaFx TableView with ObservableList like this:
emf = Persistence.createEntityManagerFactory("shopPu");
em = emf.createEntityManager();
List<Products> proList = em.createQuery("select p from Products p").getResultList();
ObservableList<Products> proObs = FXCollections.observableList(proList);
tableView.setEditable(true);
tableView.setItems(proObs);
Its works without an error my List is filling with data but TableView does not showing anything.
Here is my FXML
<TableView fx:id="tProducts" prefHeight="246.0" prefWidth="726.0" AnchorPane.bottomAnchor="160.0" AnchorPane.leftAnchor="7.0" AnchorPane.rightAnchor="7.0" AnchorPane.topAnchor="70.0">
<columns>
<TableColumn text="ID" fx:id="ID"/>
</columns>
</TableView>
i tried this:
<TableView fx:id="tProducts" prefHeight="246.0" prefWidth="726.0" AnchorPane.bottomAnchor="160.0" AnchorPane.leftAnchor="7.0" AnchorPane.rightAnchor="7.0" AnchorPane.topAnchor="70.0">
<columns>
<TableColumn text="ID" fx:id="ID">
<cellValueFactory>
<PropertyValueFactory property="id" />
</cellValueFactory>
</TableColumn>
</columns>
</TableView>
But no luck its gives such error:
javafx.fxml.LoadException: PropertyValueFactory is not a valid type.
at javafx.fxml.FXMLLoader.createElement(Unknown Source)
at javafx.fxml.FXMLLoader.processStartElement(Unknown Source)
Please help how to populate TableView
UPDATE
Controller:
public class MainWindow implements Initializable {
#FXML private Label lblStatus;
#FXML private TableView<Products> tableView;
private EntityManager em;
private EntityManagerFactory emf;
#FXML
private void Refresh_Clicked(javafx.event.ActionEvent event) {
try {
emf = Persistence.createEntityManagerFactory("shopPu");
em = emf.createEntityManager();
List<Products> proList = em.createQuery("select p from Products p").getResultList();
ObservableList<Products> proObs = FXCollections.observableList(proList);
tableView.setEditable(true);
tableView.setItems(proObs);
} catch (Exception e) {
JOptionPane.showMessageDialog(null, e.getMessage());
}
}
Thanks.

According to yours FXML your TableView should by named tProducts. But this should create error during injection, could You please paste controller code?

Without analyzing your code example any further, the posted error is probably caused by a missing import in the fxml for PropertyValueFactory.

I solved a semelhant problem in my project adding this line in the FXML file.
<?import javafx.scene.control.cell.PropertyValueFactory ?>

you have to make same name of your TableView and fxid: in code.
<TableView fx:id="table" layoutX="27.0" layoutY="65.0" prefHeight="193.0" prefWidth="552.0">
TableView table;
you have to initalize table columns...and define their property.
try this..
#FXML
private TableColumn<CheckDo, String> username;
username.setCellValueFactory(new PropertyValueFactory<CheckDo,String>("username"));
you have to set setvaluefactory of columns for show values of it