I'm hoping someone can either explain to me what I am doing wrong, or point me to the answer if this has been answered previously (I've been rooting around hereabouts for 2 days looking for an answer).
I am trying to create an demo application that launches a JavaFX GUI. When my app is ready to launch the GUI (the app has to take care of things in the background first), I call:
Application.launch(StarFXDemo.class, "");
Here is StarFXDemo.java:
package standalonedemo;
import java.io.IOException;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class StarFXDemo extends Application
{
#Override
public void start(Stage stage) throws Exception
{
Parent root = null;
try
{
root = FXMLLoader.load(getClass().getResource("StarFXDemoDoc.fxml"));
} catch (IOException ioe)
{
ioe.printStackTrace(System.out);
}
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
}
StarFXDemoDoc.fxml is in the JAR file & is the same package as StarFXDemo (rather than in another package or in a sub package). So
getClass().getResource("/standalonedemo/resources/StarFXDemoDoc.fxml")
Comes back with a URL to the file.
StarFXDemoDoc.fxml is this:
<?xml version="1.0" encoding="UTF-8"?>
<?import standalonedemo.*?>
<?import javafx.geometry.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<TitledPane animated="false" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" text="FX Sim Demo"
xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1"
fx:controller="standalonedemo.StarFXDemoDocController">
<content>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0">
<children>
<VBox prefHeight="85.0" prefWidth="322.0" spacing="5.0" style="-fx-background-color: coral;">
<children>
<Label text="Sim Title" />
<TextField fx:id="SimNameField" onMouseDragExited="#setSimulationName" />
</children>
<padding>
<Insets left="25.0" top="15.0" />
</padding>
</VBox>
<Button fx:id="BuildSphereButton" layoutX="14.0" layoutY="100.0" mnemonicParsing="false" onAction="#buildSphereAction" text="Build Sphere" />
</children></AnchorPane>
</content>
</TitledPane>
And StarFXDemoDocController.java is this:
package standalonedemo;
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.TextField;
public class StarFXDemoDocController implements Initializable
{
#FXML
private TextField SimNameField;
#FXML
private Button BuildSphereButton;
/**
* RequiredConstructor
*/
public StarFXDemoDocController() {}
#Override
public void initialize(URL url, ResourceBundle rb)
{
}
#FXML
private void buildSphereAction(ActionEvent event)
{
}
#FXML
private void setSimulationName()
{
}
}
There is nothing really in the methods yet because I'm just trying to get the GUI to appear at this time. I have the empty constructor, and the #FXML tags on the GUI elements with fx:id tags (as well as their corresponding methods).
When I run the program, at the point I call
FXMLLoader.load(getClass().getResource("/standalonedemo/resources/StarFXDemoDoc.fxml"));
it throws the following exception (this exception is no longer relevant, see the exception below):
I am assuming I have something formatted wrong, but I have no idea what it is.
Can anyone help me out here?
EDIT/UPDATE:
As per James_D's comments (thank you James, obviously I had been staring at that for way too long...), I fixed the obvious error in my controller and made SimNameField a TextField, rather than a Label (and updated the code block above to reflect this). I also changed the exception handling to use printStackTrace. The changes now get me the following stack trace:
javafx.fxml.LoadException: file:<properPathTo>/StandAloneDemo/dist/StandAloneDemo.jar!/standalonedemo/resources/StarFXDemoDoc.fxml:11
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.access$700(FXMLLoader.java:103)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:922)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:971)
at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:220)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:744)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
at standalonedemo.StarFXDemo.start(StarFXDemo.java:35)
at com.sun.javafx.application.LauncherImpl.lambda$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.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication.lambda$null$49(GtkApplication.java:139)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: standalonedemo.StarFXDemoDocController starting from SystemClassLoader[55 modules] with possible defining loaders null and declared parents [org.netbeans.MainImpl$BootClassLoader#97e1986, ModuleCL#1fa50985[org.netbeans.api.annotations.common], ModuleCL#7251b0ac[org.openide.awt], ModuleCL#7d1344a8[org.netbeans.api.progress], ModuleCL#26b9eb92[org.netbeans.swing.plaf], ModuleCL#7feb85da[org.openide.dialogs], ModuleCL#15c98cea[org.openide.nodes], ModuleCL#ed11c24[org.openide.windows], ModuleCL#621f6603[org.netbeans.swing.tabcontrol], ModuleCL#2a3ed4eb[org.netbeans.swing.outline], ...40 more]
at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
at org.netbeans.ModuleManager$SystemClassLoader.loadClass(ModuleManager.java:722)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:920)
... 22 more
Caused by: java.lang.ClassNotFoundException: standalonedemo.StarFXDemoDocController
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:222)
... 25 more
So I see the ClassNotFoundException, which got me to start looking at my controller class some more, and I noticed that Scene Builder has all but decided that my TextField doesn't exist as a tagged item (when I assign the fx:id of simNameField to the TextField in Scene Builder, I get the "No injectable field..." warning, and right clicking on the fx:id field for the control only shows the buildSphereButton tag). So I removed the simNameField from the controller class, right clicked on the FXML file in NetBeans, and told it to Make Controller. It added the TextField back with the correct fx:id and #FXML tag. Scene Builder still thinks it's an fx:id without an injectable field.
So I obviously have some manner of disconnect between the FXML and the controller, but I have no clue what it could be?
UPDATE2:
Took out the first stack trace, as it was no longer relevant and updated a few lines of code (like adding the import for the package to the FXML).
Been playing with it. If I remove the controller reference, the GUI launches as expected (so we know the FXML file is loading). If I instantiate a Controller object (before I call FXMLLoader.load(<...>)), it instantiates as expected, and I can verify that it is not null through the NetBeans debugger, so I know that the controller class is compiled, and on the class path.
So why can't the FXMLLoader find it? Should I be using an alternative method to load it? I've thought about just creating the controller object in the code and setting it that way, but that seems to annoy NetBeans when it comes to the fx:controller statement (i.e. If you have elements in the FXML that require a controller, and that statement isn't in there, NetBeans flags it as incorrect).
In the FXML you have
<TextField fx:id="SimNameField" onMouseDragExited="#setSimulationName" />
but in the controller you have
#FXML
private Label SimNameField ;
This tries to assign a text field to a field of type Label, which will cause an error at run time.
FYI for anyone who runs across this, I did solve the problem after a fashion. I still have no idea why the posted setup did not work, I'm thinking it has something to do with paths and package references.
Anyway, I was able to make it work like this:
URL fxmlFile = getClass().getResource("/standalonedemo/resources/StarFXDemoDoc.fxml");
StarFXDemoDocController sdCon = new StarFXDemoDocController();
FXMLLoader loader = new FXMLLoader(fxmlFile);
loader.setController(sdCon);
root = (TitledPane) loader.load();
Now it works as expected.
Related
I have created an FXML-based custom control, which in turn references another FXML-based custom control. They all work just fine when I load them in eclipse, but when I try to import them into SceneBuilder, the outer control (the one containing the other one) does not get imported properly.
Here is a dramatically simplified example:
Widget.java:
package example;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.fxml.FXMLLoader;
import javafx.scene.layout.Pane;
public class Widget extends Pane{
public Widget() {
Logger logger = Logger.getLogger(Widget.class.getName());
try {
FXMLLoader loader= new FXMLLoader(Widget.class.getResource("Widget.fxml"));
Pane pane = loader.load();
this.getChildren().add(pane);
}
catch(Exception e) {
logger.log(Level.SEVERE, "Failed to load Widget", e);
}
}
}
Widget.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.FlowPane?>
<?import javafx.scene.control.Label?>
<?import example.SubWidget?>
<FlowPane xmlns:fx="http://javafx.com/fxml/1" >
<children>
<Label text="Widget"/>
<SubWidget></SubWidget>
</children>
</FlowPane>
SubWidget.java:
package example;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.fxml.FXMLLoader;
import javafx.scene.layout.Pane;
public class SubWidget extends Pane{
public SubWidget() {
Logger logger = Logger.getLogger(SubWidget.class.getName());
try {
FXMLLoader loader= new FXMLLoader(SubWidget.class.getResource("SubWidget.fxml"));
Pane pane = loader.load();
this.getChildren().add(pane);
}
catch(Exception e) {
logger.log(Level.SEVERE, "Failed to load SubWidget", e);
}
}
}
SubWidget.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.FlowPane?>
<?import javafx.scene.control.Label?>
<FlowPane xmlns:fx="http://javafx.com/fxml/1" >
<children>
<Label text="Subwidget"/>
</children>
</FlowPane>
I export these to a jar and attempt to import them via SceneBuilder's jar import functionality. When I do so, SubWidget gets imported and looks just fine. Widget will also show up as a control, but it will be completely empty.
When I check the log files I see that it is due to the FXML loader not being able to find the SubWidget class file:
Oct 29, 2020 4:28:30 PM example.Widget <init>
SEVERE: Failed to load Widget
javafx.fxml.LoadException:
file:/C:/Users/nate/AppData/Roaming/Scene%20Builder/Library/TestFxControl.jar!/example/Widget.fxml
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2848)
at javafx.fxml.FXMLLoader.processImport(FXMLLoader.java:2692)
at javafx.fxml.FXMLLoader.processProcessingInstruction(FXMLLoader.java:2661)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2517)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at example.Widget.<init>(Widget.java:27)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.reflect.misc.ReflectUtil.newInstance(Unknown Source)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.constructValue(FXMLLoader.java:1009)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:746)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2425)
at com.oracle.javafx.scenebuilder.kit.library.util.JarExplorer.instantiateWithFXMLLoader(JarExplorer.java:110)
at com.oracle.javafx.scenebuilder.kit.library.util.JarExplorer.exploreEntry(JarExplorer.java:160)
at com.oracle.javafx.scenebuilder.kit.library.util.JarExplorer.explore(JarExplorer.java:70)
at com.oracle.javafx.scenebuilder.kit.library.user.LibraryFolderWatcher.exploreAndUpdateLibrary(LibraryFolderWatcher.java:325)
at com.oracle.javafx.scenebuilder.kit.library.user.LibraryFolderWatcher.runDiscovery(LibraryFolderWatcher.java:138)
at com.oracle.javafx.scenebuilder.kit.library.user.LibraryFolderWatcher.run(LibraryFolderWatcher.java:92)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: example.SubWidget
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at javafx.fxml.FXMLLoader.loadTypeForPackage(FXMLLoader.java:2916)
at javafx.fxml.FXMLLoader.loadType(FXMLLoader.java:2905)
at javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2846)
... 24 more
It appears to me that the FXML loader is using a classloader which doesn't include other custom components, which is odd because if I bypassed the FXML in the Widget class and made it:
public class Widget extends FlowPane{
public Widget() {
this.getChildren().addAll(new Label("Widget"), new SubWidget());
}
}
Then it loads just fine in SceneBuilder. So it appears that the ClassLoader that actually loads Widget and the one that the FXMLLoader uses are not the same.
This could possibly be related to this unanswered question, though they aren't exactly the same thing.
I had the same issue and created a work around that is not pretty but works.
Create a jar that contains blank classes for the controls you can not load into Scene Builder, e.g:
package com.junglefinance.gui.controls;
import javafx.fxml.FXML;
import javafx.scene.control.TextField;
public class CategoryTextField extends TextField {
#FXML private TextField textField;
public CategoryTextField() {
}
}
Make sure the package matches the package of your target control.
Load this jar into Scene Builder. This will allow Scene Builder to generate your FXML ready to load into your program. When it is loaded it will pick up your target control rather than the dummy as the import is (in this case)
<?import com.junglefinance.gui.controls.CategoryTextField?>
Note the package.
I'll try to keep this short but include as many details as I can, basically i'm trying to create a simple MPG calculator using Javafx but I've ran into a snag, whenever I attempt to run the main file some errors appear regarding the FXMLLoader but I cant for the life of me figure out why, I researched as many Q&A's as I could (and there is a lot of them) and I tried implementing the answers given but none of them worked.
Im pretty sure this is the cause of my pain.
Parent root = FXMLLoader.load(getClass().getResource("/sample/sample.fxml"));
I am pretty much a newbie when it comes to javafx so any assistance would be appreciated, if more information is required I will provide it.
File Structure
File Structure
Main
package sample;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Main extends Application {
#Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("/sample/sample.fxml"));
primaryStage.setScene(new Scene(root, 300, 275));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
sample.FXML
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>
<?import javafx.scene.text.Font?>
<GridPane alignment="center" hgap="10" prefHeight="267.0" prefWidth="251.0" vgap="10" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/11.0.1" fx:controller="sample.Controller">
<columnConstraints>
<ColumnConstraints />
</columnConstraints>
<rowConstraints>
<RowConstraints />
</rowConstraints>
<children>
<AnchorPane prefHeight="279.0" prefWidth="251.0">
<children>
<Label layoutX="12.0" layoutY="14.0" prefHeight="35.0" prefWidth="233.0" text="Miles Per Gallon Calculator" textAlignment="CENTER" underline="true">
<font>
<Font size="19.0" />
</font>
</Label>
<Label layoutX="16.0" layoutY="69.0" prefHeight="27.0" prefWidth="50.0" text="Miles">
<font>
<Font size="18.0" />
</font>
</Label>
<Label layoutX="16.0" layoutY="113.0" prefHeight="27.0" prefWidth="68.0" text="Gallons">
<font>
<Font size="18.0" />
</font>
</Label>
<Button layoutX="27.0" layoutY="151.0" mnemonicParsing="false" onAction="#calculateMPG" prefHeight="42.0" prefWidth="206.0" text="Calculate MPG" />
<TextField fx:id="milesField" layoutX="84.0" layoutY="70.0" />
<TextField fx:id="gallonsField" layoutX="84.0" layoutY="114.0" />
<Label layoutX="16.0" layoutY="204.0" prefHeight="27.0" prefWidth="68.0" text="MPG">
<font>
<Font size="18.0" />
</font>
</Label>
<TextField fx:id="mpgField" layoutX="84.0" layoutY="205.0" />
</children>
</AnchorPane>
</children>
</GridPane>
Controller
package sample;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.TextField;
import java.text.DecimalFormat;
public class Controller {
DecimalFormat df = new DecimalFormat("#.###"); double mpg;
#FXML
private TextField milesField;
#FXML
private TextField gallonsField;
#FXML
private TextField mpgField;
#FXML
void calculateMPG(ActionEvent event) {
try {
double miles = Double.parseDouble(milesField.getText());
double gallons = Double.parseDouble(gallonsField.getText());
if(gallons == 0){
mpgField.setText("Cannot Divide by zero");
}
else {
mpg = miles / gallons;
mpgField.setText(df.format(mpg));
}
} catch (NumberFormatException e){
mpgField.setText("Please enter real numbers.");
}
}
}
Error
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:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.NoSuchMethodError: 'java.lang.Object sun.reflect.misc.ReflectUtil.newInstance(java.lang.Class)'
at javafx.fxml.FXMLLoader$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$ValueElement.processStartElement(FXMLLoader.java:744)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
at sample.Main.start(Main.java:13)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
... 1 more
Exception running application sample.Main
Process finished with exit code 1
As a quick side note, I was having issues setting up IntelliJ, for some reason when I imported JDK 14 for non-javafx programming it didnt import in any of the Jar files so I had to manually import those modules, same goes for JavaFX modules, here is the images of those as well, if something appears incorrect please let me know.
JDK1
JDK2
JDK3
Edit:
Just did a clean install of IntelliJ, JAvaFX,& JDK14, still got the same issue when I attempted to run the basic JavaFX "hello world" although the errors given are much more descriptive, Ill post the new errors here.
Exception in Application start method
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.IllegalAccessError: class com.sun.javafx.fxml.FXMLLoaderHelper (in unnamed module #0x6af6aa0c) cannot access class com.sun.javafx.util.Utils (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.util to unnamed module #0x6af6aa0c
at com.sun.javafx.fxml.FXMLLoaderHelper.<clinit>(FXMLLoaderHelper.java:38)
at javafx.fxml.FXMLLoader.<clinit>(FXMLLoader.java:2056)
at sample.Main.start(Main.java:13)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
... 1 more
Exception running application sample.Main
Process finished with exit code 1
Edit 2:
Finally cleaned up the errors, after adding this line (see below) to VM options a single issue appeared. (Yes i put my path)
-p /%EnterPathToJavaFX%/lib --add-modules javafx.controls
Error occurred during initialization of boot layer
java.lang.module.FindException: Module javafx.base not found
Going to do some tinkering with the modules folder and see if i can fix this.
So after working on this for a couple of hours, i got a handle on the VM options (which was something I wasnt aware of when i first started) but i'm pretty sure the issue was caused by the use of forward and backward slashes, in a lot of the answers I read, they used forwards slashes instead of backwards slashes, I didnt realize this until about ten minutes ago, its a little embarrassing but, lesson learned.
Anyways, if youre still having this issue i'll give a basic rundown on what should be done (although there are a ton of good answers out there, just remember to use backslashes, dont be a dumb dumb like me).
Important Note: This implementation is for Windows Systems
1st:
Ensure that you have your JDK and JavaFX downloaded, try to keep the folder names simple (like JDK14 or JavaFX14).
2nd:
Open a new project and select your "Project SDK", in our case select the JDK you downloaded.
3rd:
After creating the project go to File -> Project Structure, then under 'Project Settings' select Libraries, then click the Plus icon to the right of project settings, select Java then navigate to your JavaFX folder and select 'lib'.
4th:
If you run the project now, you will get a runtime error, instead go to Run (at the top) then select 'Edit Configurations'. In the 'VM Options:' text field enter:
-p *Your_Drive_Partition*:\*path_to_JFX*\JavaFX\lib --add-modules=javafx.controls,javafx.fxml
And now you're done, welcome to JavaFX.
TL;DR: Forward slashes are for URI's and backslashes are for local (windows) files, do not forget this or end up in the same situation as me, going insane from doing the same thing over and over again expecting a different result.
Have a good day.
I am very new to java fx , I am just trying to add WebView component. So everytime adding WebView Intellij returns a problem.
Here is output:
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: javafx.fxml.LoadException:
Here is my sample.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.web.WebView?>
<GridPane alignment="center" hgap="10" vgap="10" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/11.0.1" fx:controller="sample.Controller">
<children>
<WebView fx:id="myweb" prefHeight="200.0" prefWidth="200.0" />
</children>
</GridPane>
Here is my controller:
import javafx.fxml.FXML;
import javafx.scene.web.WebView;
public class Controller {
#FXML
private WebView myweb;
}
If I am adding another stuff, everything works well, but after adding WebView it returns error.
Also I heard that WebView is not being supported in jdk 11. Is that true?
Just add the word javafx.web to your VM Options after your modules.
You can use the following line of code in your VM Options and add any other modules you're using.
--add-modules javafx.controls,javafx.fxml,javafx.graphics,javafx.web
I am starting to build a program with SceneBuilder and JetBrains IDE, i want to internationalize the program so i made a properties file. Everything works fine on the SceneBuilder but when i try to run the program with JetBrains i get this exception
/usr/lib/jvm/java-8-oracle/bin/java -Didea.launcher.port=7532 -Didea.launcher.bin.path=/home/paulo/idea-IC-163.12024.16/bin -Dfile.encoding=UTF-8 -classpath /usr/lib/jvm/java-8-oracle/jre/lib/charsets.jar:/usr/lib/jvm/java-8-oracle/jre/lib/deploy.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/cldrdata.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/dnsns.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/jaccess.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/jfxrt.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/localedata.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/nashorn.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/sunec.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/sunjce_provider.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/sunpkcs11.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/zipfs.jar:/usr/lib/jvm/java-8-oracle/jre/lib/javaws.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jce.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jfr.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jfxswt.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jsse.jar:/usr/lib/jvm/java-8-oracle/jre/lib/management-agent.jar:/usr/lib/jvm/java-8-oracle/jre/lib/plugin.jar:/usr/lib/jvm/java-8-oracle/jre/lib/resources.jar:/usr/lib/jvm/java-8-oracle/jre/lib/rt.jar:/home/paulo/mysql-connector-java-5.1.41/mysql-connector-java-5.1.41-bin.jar:/home/paulo/ProjetoOrcamentos/WorkManager/out/production/WorkManager:/home/paulo/idea-IC-163.12024.16/lib/idea_rt.jar com.intellij.rt.execution.application.AppMain sample.Main
Exception in Application start method
Exception in thread "main" 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:748)
Caused by: javafx.fxml.LoadException: No resources specified.
/home/paulo/ProjetoOrcamentos/WorkManager/out/production/WorkManager/sample/sample.fxml:16
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2597)
at javafx.fxml.FXMLLoader.access$100(FXMLLoader.java:103)
at javafx.fxml.FXMLLoader$Element.resolvePrefixedValue(FXMLLoader.java:421)
at javafx.fxml.FXMLLoader$Element.processValue(FXMLLoader.java:363)
at javafx.fxml.FXMLLoader$Element.processPropertyAttribute(FXMLLoader.java:325)
at javafx.fxml.FXMLLoader$Element.processInstancePropertyAttributes(FXMLLoader.java:235)
at javafx.fxml.FXMLLoader$ValueElement.processEndElement(FXMLLoader.java:767)
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 sample.Main.start(Main.java:13)
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.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication.lambda$null$49(GtkApplication.java:139)
... 1 more
This is the code i have so far
public class Main extends Application {
#Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
primaryStage.setScene(new Scene(root, 1200, 1000));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
FXML File:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.Cursor?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.HBox?>
<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1">
<top>
<HBox spacing="20.0" BorderPane.alignment="CENTER">
<children>
<Button mnemonicParsing="false" text="%newWorkButton">
<cursor>
<Cursor fx:constant="CLOSED_HAND" />
</cursor></Button>
<Button mnemonicParsing="false" text="%dbButton" />
</children>
<padding>
<Insets bottom="15.0" left="15.0" right="15.0" top="15.0" />
</padding>
<BorderPane.margin>
<Insets />
</BorderPane.margin>
</HBox>
</top>
</BorderPane>
I know that the problem occurred while trying to load the properties file, but why it is working in the SceneBuilder and it doesn't work when i try to run it?
PS: The problem happens when %newWorkButton or %dbButton appears because that is the part where it uses the property file.
I am answering my own post because i was able to find the answer a few days ago.
As you can see in Main i had this line loading the fxml:
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"))
But since i am using a property file i need to load it too, so this is what i did:
ResourceBundle resources = ResourceBundle.getBundle("Language/lang_pt");;
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"),resources);
I'm having a similar issue. I just found this and realized that I had forgotten to load my ResourceBundle and my app is blowing up on an i18n resource. I found my answer on this post:
javaFX application error: No resources specified
you must replace "/" with "." like this
ResourceBundle resources = ResourceBundle.getBundle("Language.lang_pt");
I've been toying with JavaFX for a while now and now I wanted to share some of the components I have built. For ease of use, I would like to be able to distribute the components as libraries, so another user can just import my libraries into JavFX project. However, building a a library file to import into SceneBuilder (SB) proved to be much harder than I had expected. I tried following this blog post but I must be doing something wrong. I want to create my own custom component, using a .fxml file and a .jar file.
I tried building this component:
TestPane.java
package pack;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.layout.AnchorPane;
import java.io.IOException;
public class TestPane extends AnchorPane {
public TestPane(){
FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("TestPane.fxml"));
fxmlLoader.setRoot(this);
fxmlLoader.setController(this);
try {
fxmlLoader.load();
} catch (IOException exception) {
throw new RuntimeException(exception);
}
}
#FXML protected void onClick(ActionEvent ae){
System.out.println("Click");
}
}
TestPane.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<fx:root type="AnchorPane" xmlns="http://javafx.com/javafx/8.0.40" xmlns:fx="http://javafx.com/fxml/1">
<Button fx:id="button" layoutX="6.0" layoutY="10.0" mnemonicParsing="false" text="Button" onAction="#onClick" />
</fx:root>
I use Eclipse Mars, created a new JavaFX Library project, created a new package called pack. In that package, I created the two components from above. I then right-clicked the project and selected "Export... -> Jar-file", and made no changes in the export dialogue.
I then created a new FXML project. I opened the .fxml file in SB and imported my exported .jar file, using the Import JAR/FXML File..." dialogue, and then dragged it into my view.
Here is the code for the test project I've created.
LibTest.java
package test;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import java.io.IOException;
public class LibTest extends Application {
#Override
public void start(Stage primaryStage) throws IOException {
Parent root = FXMLLoader.load( getClass().getResource("LibTest.fxml") );
Scene scene = new Scene(root);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
LibTest.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import pack.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane prefHeight="199.0" prefWidth="126.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8.0.40">
<children>
<TestPane layoutX="34.0" layoutY="82.0" />
</children>
</AnchorPane>
I thought I had followed all the online guides and tutorials by now but there is something I must be missing. When I then try to launch my test project, I get the error bellow. I understand that Caused by: javafx.fxml.LoadException: TestPane is not a valid type. is the "key message", but what does it mean, and how do I fix this problem?
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:497)
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:497)
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$152(LauncherImpl.java:182)
at com.sun.javafx.application.LauncherImpl$$Lambda$50/1645995473.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
Caused by: javafx.fxml.LoadException: TestPane is not a valid type.
/D:/WorkspaceDir/ProjectDir/bin/test/LibTest.fxml:11
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.createElement(FXMLLoader.java:2778)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2708)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2531)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2445)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3218)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3179)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3152)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3128)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3108)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3101)
at test.LibTest.start(LibTest.java:15)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$159(LauncherImpl.java:863)
at com.sun.javafx.application.LauncherImpl$$Lambda$53/198061478.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$172(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl$$Lambda$45/186276003.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$170(PlatformImpl.java:295)
at com.sun.javafx.application.PlatformImpl$$Lambda$48/1079803749.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(PlatformImpl.java:294)
at com.sun.javafx.application.PlatformImpl$$Lambda$47/237061348.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(WinApplication.java:101)
at com.sun.glass.ui.win.WinApplication$$Lambda$36/2117255219.run(Unknown Source)
... 1 more
Exception running application test.LibTest
What is it that I am missing? What causes this problem and how do I fix it?
The problem is caused by the compiler (or the VM, I don't know the proper timing) does not know how to create an object of type TestPane.
Note from the error log that it says that the error occurred at D:/WorkspaceDir/ProjectDir/bin/test/LibTest.fxml:11. If we look at the LibTest.fxml, row 11, we see that this is the row that tries to create the TestPane.
The solution to the problem is to add the library file into the build path of the Java project. This will give your project the proper knowledge of how to create an object of type TestPane. Right-click the project -> Build Path -> Configure Build Path... Then, under the Libraries-tab, click Add JARs... (or Add External JARs..., if the .jar file is not located within your workspace) and find your exported .jar file.