This question already has an answer here:
How do I determine the correct path for FXML files, CSS files, Images, and other resources needed by my JavaFX Application?
(1 answer)
Closed 2 years ago.
I am trying to create a JavaFX program, and every time I try to run my code I am getting an exception - I'm not entirely sure what it means though ...
My code:
package com.PickingList.ui;
import java.io.IOException;
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 {
private Stage stage;
#Override
public void start(Stage primaryStage) throws IOException {
Scene scene;
FXMLLoader loader = new FXMLLoader(this.getClass().getResource("./TelaLogin.fxml"));
Parent root = loader.load();
stage.setScene(new Scene(root));
stage.setTitle("Login");
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
I'm using Eclipse to create the project, and I'm getting the following error:
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$1(LauncherImpl.java:182)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalStateException: Location is not set.
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2434)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at com.PickingList.ui.Main.start(Main.java:19)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$4(WinApplication.java:186)
Exception running application com.PickingList.ui.Main
enter image description here
Try:
FXMLLoader loader = new FXMLLoader(this.getClass().getResource("/TelaLogin.fxml"));
Assuming that, your folder structure looks like:
/src/TelaLogin.fxml
Related
I'm working on a mp3 player which is using a JavaFX UI. When I start the application in NetBeans, it works fine. But when I create an executable jar with Clean and Build and start it with the cmd, I get an exception where the FXMLLoader loads the fxml file.
There must be a problem with the paths, right?
First Project Structure
Project Structure
I created a second application and stored everything in one folder. Created an executable jar and it worked fine.
Second Project Structure
Project Structure
Source Code (First)
package jornsfx;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class JornsFX extends Application{
#Override
public void start(Stage stage)throws Exception{
stage.setResizable(false);
Parent root = FXMLLoader.load(getClass().getResource("/views/jornsFX.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.setTitle("JornsFX");
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Exception (First)
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$155(LauncherImpl.java:182)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException: Location is required.
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3207)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
at jornsfx.JornsFX.start(JornsFX.java:14)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
... 1 more
Exception running application jornsfx.JornsFX
I can't tell you for certain, but it looks like
getClass().getResource("/views/jornsFX.fxml")
in your start() method is null. The exception suggests it and also the file is named /views/JornsFX.fxml in the screenshot.
While learning and exploring Java 9 from eclipse. I create a simple project in eclipse, Although when I compile the project, it prints the program's expected result but along following exception too.
Could not instrument class mymodule/App: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
at org.eclipse.jdt.launching.internal.javaagent.Premain$1.transform(Premain.java:51)
at java.instrument/java.lang.instrument.ClassFileTransformer.transform(Unknown Source)
at java.instrument/sun.instrument.TransformerManager.transform(Unknown Source)
at java.instrument/sun.instrument.InstrumentationImpl.transform(Unknown Source)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(Unknown Source)
at java.base/java.security.SecureClassLoader.defineClass(Unknown Source)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(Unknown Source)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(Unknown Source)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(Unknown Source)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Unknown Source)
at java.base/sun.launcher.LauncherHelper.loadMainClass(Unknown Source)
at java.base/sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Java code:
package mymodule;
import java.util.List;
public class App {
public static void main(String[] args) {
List<String> immutables = List.of("Food", "Water", "House");
System.out.println(immutables.get(0));
}
}
module-info.java file
module mymodule {
}
Seems like Eclipse is yet to migrate to ASM_6.0 which is completely Java 9 compatible.
On the other hand you're looking at the stacktrace which is similar to BUG#526383 and you can follow the same for updates.
Does anyone know how to fix this?
I created a client to consume a webservice. The client code is:
package cliente;
import java.util.List;
import handler.HeaderHandler;
import webservice.BoletinOficial;
import webservice.BoletinOficialService;
import petanuncio.PeticionAnuncio;
import respanuncio.RespuestaAnuncio;
import org.apache.cxf.jaxws.binding.DefaultBindingImpl;
import javax.xml.ws.BindingProvider;
import javax.xml.ws.handler.Handler;
import java.util.ArrayList;
public class Cliente {
/**
* Main
* #param args
*/
#SuppressWarnings("rawtypes")
public static void main(String[] args) {
String endpointURL = "";
try {
BoletinOficialService service = new BoletinOficialService();
BoletinOficial proxy = service.getBoletinOficialSoap11();
//rest of code
} catch (Exception e) {
e.printStackTrace();
}
}
The problem is when running the program and get the following error anc cannot even create "service":
Exception in thread "main" java.util.ServiceConfigurationError: javax.xml.ws.spi.Provider: Provider org.apache.cxf.jaxws.spi.ProviderImpl could not be instantiated
at java.util.ServiceLoader.fail(Unknown Source)
at java.util.ServiceLoader.access$100(Unknown Source)
at java.util.ServiceLoader$LazyIterator.nextService(Unknown Source)
at java.util.ServiceLoader$LazyIterator.next(Unknown Source)
at java.util.ServiceLoader$1.next(Unknown Source)
at javax.xml.ws.spi.Provider.getProviderUsingServiceLoader(Unknown Source)
at javax.xml.ws.spi.Provider.provider(Unknown Source)
at javax.xml.ws.Service.<init>(Unknown Source)
at webservice.BoletinOficialService.<init>(BoletinOficialService.java:46)
at cliente.Cliente.main(Cliente.java:35)
Caused by: java.lang.NoClassDefFoundError: org/apache/cxf/service/invoker/Invoker
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
... 8 more
Caused by: java.lang.ClassNotFoundException: org.apache.cxf.service.invoker.Invoker
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 12 more
This class and others were created via wsimport from a wsdl file, althoug I don't think this is related to the error I am getting.
The class org.apache.cxf.jaxws.spi.ProviderImpl is in cxf-rt-frontend-jaxws-3.1.1.jar file whis is added as referece to the project.
Is there anything I am missing? Thank you in advance.
Add the compile dependencies you find at https://mvnrepository.com/artifact/org.apache.cxf/cxf-rt-frontend-jaxws/3.1.1
Better, switch to Maven.
Invoker is part of the CXF API. Looks like the cxf-api is missing.
If you use maven, add the dependency :
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-api</artifactId>
<version>YOUR_VERSION</version>
</dependency>
Else add the jar to your classpath.
I'm trying to create javafx applet, using IntelliJ Idea. After building I get three files: .jar, .jnlp and .html. If I launch jar all works fine, but if I try to run app using jnlp or html it throws exception:
java.lang.NullPointerException: Location is required.
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.load(Unknown Source)
at sample.Main.start(Main.java:14)
at com.sun.javafx.applet.FXApplet2$2.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$170(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$45/31918841.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$44/13936151.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(Unknown Source)
at com.sun.glass.ui.win.WinApplication$$Lambda$34/10055096.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.NullPointerException: Location is required.
at com.sun.javafx.applet.FXApplet2$2.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$170(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$45/31918841.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$44/13936151.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(Unknown Source)
at com.sun.glass.ui.win.WinApplication$$Lambda$34/10055096.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException: Location is required.
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.load(Unknown Source)
at sample.Main.start(Main.java:14)
... 11 more
Why is it so? Jar exactly contains needed fxml located at the specified path.
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/sample.fxml"));
primaryStage.setTitle("Hello World");
primaryStage.setScene(new Scene(root, 600, 400));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
FXML:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<children>
<Button layoutX="173.0" layoutY="188.0" prefHeight="25.0" prefWidth="255.0" text="Button" />
</children>
</AnchorPane>
What am I doing wrong? Help please.
The problem is in this line:
Parent root = FXMLLoader.load(getClass().getResource("/sample/sample.fxml"));
It is pretty clear that the load method is actually being called with a null argument. And that happens because getResource("/sample/sample.fxml") cannot file that resource.
The resource is missing (or has the wrong path) on the runtime classpath.
This is a problem of security. The FXML file is considered as to be loaded from the filesystem of the client, but the "user.dir, read" permission is not tolerated by the Java security manager.
However, it is a problem of signing JavaFX applets. Once signed, the loading works well. Example here: http://web.univ-pau.fr/~barbier/PauWare/My_device/dist/My_device_JavaFX.html
BTW, there is no problem with JavaFX applications
(eg, http://www.franckbarbier.com/PauWare/Programmable_thermostat/) that have self-contained widgets in the code (no load of FXML file). Cheers!!
I am trying to run a very simple JFace program:
import org.eclipse.jface.window.*;
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;
public class HelloSWT_JFace extends ApplicationWindow{
public HelloSWT_JFace(){
super(null);
}
protected Control createContents(Composite parent){
Text helloText = new Text(parent, SWT.CENTER);
helloText.setText("Hello SWT and JFace");
parent.pack();
return parent;
}
public static void main(String[] args) {
HelloSWT_JFace awin = new HelloSWT_JFace();
awin.setBlockOnOpen(true);
awin.open();
Display.getCurrent().dispose();
}
}
As far as I know, all the libraries are installed and the code, in Eclipse, gives me no errors. Nonetheless, when I run I get
and the long error report:
Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/core/runtime/IProgressMonitor
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.IProgressMonitor
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 6 more
Does anyone know what could be causing this?
Please note; I took a look at THIS question and followed the solutions, but installing Equinox plugins did not work.
Thanks to the links Baz provided, I found the solution by making sure all the necessary Jars were added (I was missing a couple).
The necessary jars are:
org.eclipse.core.commands_<version info>.jar
org.eclipse.equinox.common_<version info>.jar
org.eclipse.jface_<version info>.jar
org.eclipse.osgi_<version info>.jar
org.eclipse.ui.workbench_<version info>.jar
More info can be found at the link Baz provided: "Identify the Required External JAR Files for SWT and JFace"