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why FXMLLoader giving error when used to load a FXML file? [duplicate]

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Module error when running JavaFx media application
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Closed 2 years ago.
I was following a JavaFX tutorial and wrote the following code.
All the required header files are imported.
Main.java
public class Main extends Application {
#Override
public void start(Stage primaryStage){
try {
Parent root = FXMLLoader.load(getClass().getResource("Main.fxml"));
Scene scene = new Scene(root);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.setTitle("Random Number Generator");
primaryStage.show();
}catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
}
Main.fxml (created using SceneBuilder)
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane minHeight="100.0" minWidth="100.0" prefHeight="300.0" prefWidth="500.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.MainController">
<children>
<Button id="button_generateRandomNumber" layoutX="171.0" layoutY="212.0" mnemonicParsing="false" onAction="#generateRandom" text="Generate Random Number" textAlignment="CENTER" textFill="#1e4d0e" />
<Label fx:id="message" layoutX="112.0" layoutY="143.0" prefHeight="45.0" prefWidth="258.0" textAlignment="CENTER" />
</children>
</AnchorPane>
StackTrace
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$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.IllegalAccessError: class com.sun.javafx.fxml.FXMLLoaderHelper (in unnamed module #0x5d85fddd) cannot access class com.sun.javafx.util.Utils (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.util to unnamed module #0x5d85fddd
at com.sun.javafx.fxml.FXMLLoaderHelper.<clinit>(FXMLLoaderHelper.java:38)
at javafx.fxml.FXMLLoader.<clinit>(FXMLLoader.java:2056)
at application.Main.start(Main.java:20)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$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 application.Main
I have tried every combination with getResource("Main.fxml") including relative and absolute path in every way possible still I am getting the error.
code is 100% same as of that tutorial.

In order to javafx work, you need to either download and import javafx sdk to your project or specify dependency, if you are using build tool like Maven or Gradle.
Moreover you need to add required modules (in this case javafx's .jars) either by using module-info.java and specifying required modules there, or adding modules to VM arguments - https://openjfx.io/openjfx-docs/#install-javafx.
Bonus:
Note that javafx was present in JDK up to version 10. Since version 11, they removed it. That is why you need to import javafx somehow to your project.

JavaFX / Intellij errors

I'm trying to set up my programing environment in Java.
I Have Ubuntu 18.04LTS / Java SE Runtime Environment (build 13.0.1+9)/ Intellij/ JavaFX Scene Builder 11.0.0
I have followed this tutorial : https://www.youtube.com/watch?v=T3NlWMzPyXM
The following 3 files were created:
Main.java :
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.fxml"));
primaryStage.setTitle("Hello World");
primaryStage.setScene(new Scene(root, 300, 275));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Controller.java :
package sample;
import javafx.event.ActionEvent;
public class Controller {
// I start writing the code here:
public void pressButton(ActionEvent event) {
System.out.println("You have pressed the button");
}
}
sample.fxml :
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<GridPane alignment="center" hgap="10" prefHeight="300.0" prefWidth="300.0" vgap="10" xmlns="http://javafx.com/javafx/10.0.2-internal" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
<columnConstraints>
<ColumnConstraints />
</columnConstraints>
<rowConstraints>
<RowConstraints />
</rowConstraints>
<children>
<Button fx:id="btn_msg" mnemonicParsing="false" onAction="#pressButton" prefHeight="109.0" prefWidth="121.0" text="Button" />
</children>
</GridPane>
When I run application I receive the following output errors:
/usr/lib/jvm/java-13-oracle/bin/java --add-modules javafx.base,javafx.graphics --add-reads javafx.base=ALL-UNNAMED --add-reads javafx.graphics=ALL-UNNAMED -Djava.library.path=/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib -javaagent:/snap/intellij-idea-community/185/lib/idea_rt.jar=34245:/snap/intellij-idea-community/185/bin -Dfile.encoding=UTF-8 -classpath "/home/leo/IdeaProjects/Java kurs kenis/FX_trial2/out/production/FX_trial2:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/src.zip:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx-swt.jar:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx.web.jar:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx.base.jar:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx.fxml.jar:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx.media.jar:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx.swing.jar:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx.controls.jar:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx.graphics.jar" -p /home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx.base.jar:/home/leo/IdeaProjects/javafx-sdk-11.0.2/lib/javafx.graphics.jar sample.Main
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:567)
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:567)
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$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:830)
Caused by: java.lang.IllegalAccessError: class com.sun.javafx.fxml.FXMLLoaderHelper (in unnamed module #0xc9d8652) cannot access class com.sun.javafx.util.Utils (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.util to unnamed module #0xc9d8652
at com.sun.javafx.fxml.FXMLLoaderHelper.<clinit>(FXMLLoaderHelper.java:38)
at javafx.fxml.FXMLLoader.<clinit>(FXMLLoader.java:2056)
at sample.Main.start(Main.java:13)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$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.gtk.GtkApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277)
... 1 more
Exception running application sample.Main
Process finished with exit code 1
I can't find any solution for this. Can anybody help?

Finally I have worked the problem out.
I put the line:
--module-path /home/leo/MyApps/javafx-sdk-13.0.1/lib --add-modules=javafx.controls,javafx.fxml
here:
Run > Edit Configuration > VM options
and:
File > Project structure > Libraries > + choose the directory:
/home/leo/MyApps/javafx-sdk-13.0.1/lib

You used
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
Try:
Parent root = FXMLLoader.load(getClass().getResource("/sample.fxml"));

Javafx Webview Problem Caused by: javafx.fxml.LoadException:

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

Why is my JavaFX controller not loading?

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.

FXML Load Exception no resources specified

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");