We Keep Coding

Cant run because of java.lang.reflect.InvocationTargetException with javaFX without using FXML

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)
Hello I added all my javafx-sdk in my classpath :
"/home/emilio/openjfx-19_linux-x64_bin-sdk/javafx-sdk-19/lib/javafx.base.jar",
"/home/emilio/openjfx-19_linux-x64_bin-sdk/javafx-sdk-19/lib/javafx.controls.jar",
"/home/emilio/openjfx-19_linux-x64_bin-sdk/javafx-sdk-19/lib/javafx.fxml.jar",
"/home/emilio/openjfx-19_linux-x64_bin-sdk/javafx-sdk-19/lib/javafx.graphics.jar",
"/home/emilio/openjfx-19_linux-x64_bin-sdk/javafx-sdk-19/lib/javafx.media.jar",
"/home/emilio/openjfx-19_linux-x64_bin-sdk/javafx-sdk-19/lib/javafx.swing.jar",
"/home/emilio/openjfx-19_linux-x64_bin-sdk/javafx-sdk-19/lib/javafx.web.jar",
"/home/emilio/openjfx-19_linux-x64_bin-sdk/javafx-sdk-19/lib/javafx-swt.jar"
And also added the
"vmArgs": "--module-path \"/home/emilio/openjfx-19_linux-x64_bin-sdk/javafx-sdk-19/lib\" --add-modules javafx.controls,javafx.graphics,javafx.base,javafx.media",
And even with that i still have this error (I'm on Ubuntu 22.04, Java 17, Java FX 19):
If someone has already encounter this. This will really help me (i have the same problem on my windows pc on both eclipse and vscode. The project is working fine on all of my mates computers.

JavaFx msal4j NoClassDefFoundError

I am running into an exception trying to get the example code here working with a JavaFx desktop app.
Java Version - OpenJDK 17
OS - Linux Mint 20.1 Ulyssa
My Azure app reg has been setup,
private String PUBLIC_CLIENT_ID = "my client id from azure";
private String AUTHORITY = "https://login.microsoftonline.com/organizations/";
My code is setup inside my Controller's constructor
public HelloController() throws MalformedURLException, URISyntaxException {
PublicClientApplication app = PublicClientApplication
.builder(PUBLIC_CLIENT_ID)
.authority(AUTHORITY)
.build();
InteractiveRequestParameters parameters = InteractiveRequestParameters
.builder(new URI("http://localhost"))
.scopes(Collections.singleton("user.read"))
.build();
IAuthenticationResult result = app.acquireToken(parameters).join();
}
And gets this stack trace upon startup complaining about not being able to find com/sun/net/httpserver/HttpHandler
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/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:465)
at javafx.graphics/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$FXHelper.main(LauncherHelper.java:1071)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:901)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:196)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: javafx.fxml.LoadException:
/home/chewy/IdeaProjects/FxTimer/target/classes/com/example/fxtimer/hello-view.fxml:23
at javafx.fxml/javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2707)
at javafx.fxml/javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:944)
at javafx.fxml/javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:981)
at javafx.fxml/javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:230)
at javafx.fxml/javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:755)
at javafx.fxml/javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2808)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2634)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
at javafx.fxml/javafx.fxml.FXMLLoader.load(FXMLLoader.java:2516)
at com.example.fxtimer/com.example.fxtimer.HelloApplication.start(HelloApplication.java:16)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:847)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:484)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$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$11(GtkApplication.java:290)
... 1 more
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at javafx.fxml/javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:939)
... 17 more
Caused by: java.lang.NoClassDefFoundError: com/sun/net/httpserver/HttpHandler
at msal4j#1.11.2/com.microsoft.aad.msal4j.AbstractClientApplicationBase.getAuthenticationResultSupplier(AbstractClientApplicationBase.java:145)
at msal4j#1.11.2/com.microsoft.aad.msal4j.AbstractClientApplicationBase.executeRequest(AbstractClientApplicationBase.java:117)
at msal4j#1.11.2/com.microsoft.aad.msal4j.PublicClientApplication.acquireToken(PublicClientApplication.java:115)
at com.example.fxtimer/com.example.fxtimer.HelloController.<init>(HelloController.java:112)
... 23 more
Caused by: java.lang.ClassNotFoundException: com.sun.net.httpserver.HttpHandler
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 27 more
Exception running application com.example.fxtimer.HelloApplication
Process finished with exit code 1
If I do add that httpserver as a dependency
<dependency>
<groupId>com.sun.net.httpserver</groupId>
<artifactId>http</artifactId>
<version>20070405</version>
</dependency>
I get a little further until something else is undefined. No browser window ever launches.
Exception in Application start method
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:465)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:364)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1071)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:901)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:196)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: javafx.fxml.LoadException:
/home/chewy/IdeaProjects/FxTimer/target/classes/com/example/fxtimer/hello-view.fxml:23
at javafx.fxml/javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2707)
at javafx.fxml/javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:944)
at javafx.fxml/javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:981)
at javafx.fxml/javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:230)
at javafx.fxml/javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:755)
at javafx.fxml/javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2808)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2634)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
at javafx.fxml/javafx.fxml.FXMLLoader.load(FXMLLoader.java:2516)
at com.example.fxtimer/com.example.fxtimer.HelloApplication.start(HelloApplication.java:16)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:847)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:484)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$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$11(GtkApplication.java:290)
... 1 more
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at javafx.fxml/javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:939)
... 17 more
Caused by: java.util.concurrent.CompletionException: java.lang.NoClassDefFoundError: sun/misc/ServiceConfigurationError
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1770)
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1760)
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)
Caused by: java.lang.NoClassDefFoundError: sun/misc/ServiceConfigurationError
at com.sun.net.httpserver.HttpServer.create(HttpServer.java:110)
at msal4j#1.11.2/com.microsoft.aad.msal4j.HttpListener.startListener(HttpListener.java:19)
at msal4j#1.11.2/com.microsoft.aad.msal4j.AcquireTokenByInteractiveFlowSupplier.startHttpListener(AcquireTokenByInteractiveFlowSupplier.java:90)
at msal4j#1.11.2/com.microsoft.aad.msal4j.AcquireTokenByInteractiveFlowSupplier.getAuthorizationResult(AcquireTokenByInteractiveFlowSupplier.java:55)
at msal4j#1.11.2/com.microsoft.aad.msal4j.AcquireTokenByInteractiveFlowSupplier.execute(AcquireTokenByInteractiveFlowSupplier.java:37)
at msal4j#1.11.2/com.microsoft.aad.msal4j.AuthenticationResultSupplier.get(AuthenticationResultSupplier.java:71)
at msal4j#1.11.2/com.microsoft.aad.msal4j.AuthenticationResultSupplier.get(AuthenticationResultSupplier.java:20)
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768)
... 6 more
Caused by: java.lang.ClassNotFoundException: sun.misc.ServiceConfigurationError
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 14 more
Exception running application com.example.fxtimer.HelloApplication
Process finished with exit code 1
Does anyone know what is causing this Class definitions to be missing/what I need to do in order to get everything working nicely?
Thanks for any help!

You don't need to add a dependency for the http server, it is in the jdk.
Perhaps you need to require it as a module.
Asker confirmed this worked in comments:
my javafx app does have a module-info.java file and by adding requires jdk.httpserver I am able to get past the errors
The Microsoft library should define a module-info.java file which appropriately defines the module and its requirements; however, it does not do so. Log a bug report in their issue tracker. You might be able to get it to work in a modular environment by some hacks or VM arguments or running stuff off the class path instead.
Try to replicate this behavior in a modular Java app (app with module-info.java), which does not use JavaFX, to create a minimal reproducible example, then edit the question to include your example and also put the example in your issue report to Microsoft.
Asker also did this, as confirmed in comments, see the issue report at:
https://github.com/AzureAD/microsoft-authentication-library-for-java/issues/473
The second exception you posted,
java.lang.ClassNotFoundException: sun.misc.ServiceConfigurationError
is because sun.misc APIs were never part of the public JRE API and several sun.misc APIs (including this one) were deprecated in JDK 9 and removed from the JDK as part of the modularity work.
The exception occurred because you tried to bring in a really old dependency on a 2007 version of the com.sun.net.httpserver API which is not compatible with Java 9+.

How to fix JavaFX-Blur UnsatisfiedLinkError

There is this library called JavaFX-Blur, which can be found at https://github.com/kieferlam/JavaFX-Blur.
When trying to implement it in a project, this error occurred:
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:78)
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:78)
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$FXHelper.main(LauncherHelper.java:1071)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:831)
Caused by: java.lang.UnsatisfiedLinkError: 'void sample.NativeBlur._extApplyBlur(java.lang.String, int)'
at sample.NativeBlur._extApplyBlur(Native Method)
at sample.Blur._extApplyBlur(Blur.java:30)
at sample.Blur.applyBlur(Blur.java:44)
at sample.Main.start(Main.java:29)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:474)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:447)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:446)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$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
What I have done so far to set it up:
- downloaded the project as a zip file and unzipped it.
- added the two included .java files to the main package of my application.
- in IntelliJ I added the javafxblur.dll by adding it as jar/directory on the modules tab of the project structure of the Project Structure
- copied and pasted the demo code from the article on Github into my project.
I do not think the error is that the library file can not be found, because I get a different error, when I delete it.

JavaFX: creating a Media Object causes java.lang.reflect.InvocationTargetException Error

I'm currently working on a simple game and I'm trying to implement sound with JavaFX and I get a java.lang.reflect.InvocationTargetException error when creating a Media object.
I have tried:
Media media = new Media("file:sounds/test.mp3");
Media media = new Media(new File("file:sound/test.mp3").toURI().toString());
and also both with the complete file path on my PC.
This is the error I'm getting:
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$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:830)
Caused by: java.lang.NoClassDefFoundError: javafx/scene/media/Media
at application.Main.start(Main.java:14)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$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$3(WinApplication.java:174)
... 1 more
Caused by: java.lang.ClassNotFoundException: javafx.scene.media.Media
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 10 more
Exception running application application.Main```

The error message says NoClassDefFoundError: javafx/scene/media/Media which means that it is not finding the Media classes.
The solution is to add vm arguments to your project.
Right click project > Run As > Run configurations ...
Click on Arguments and paste the following in vm arguments:
--module-path "/path/to/javafx-sdk/lib" --add-modules javafx.media
Depending on your project, you may have to add javafx.controls and javafx.fxml as well.
--module-path "/path/to/javafx-sdk/lib" --add-modules javafx.controls,javafx.fxml,javafx.media
Replace /path/to/javafx-sdk/lib with the actual path of the lib folder in your system.

Errors with javafx in default skeleton from intellij idea

I just created a simple project based on javafx in intellij idea (i have javafx). When I run intellij idea's skeleton I have so many errors. Help pls
"C:\Program Files\Java\jdk-14\bin\java.exe" --add-modules javafx.base,javafx.graphics --add-reads javafx.base=ALL-UNNAMED --add-reads javafx.graphics=ALL-UNNAMED "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2019.3.4\lib\idea_rt.jar=51146:C:\Program Files\JetBrains\IntelliJ IDEA 2019.3.4\bin" -Dfile.encoding=UTF-8 -classpath "D:\Proiecte\SteamINVEST\untitled\out\production\untitled;C:\Program Files\Java\javafx-sdk-14\lib\src.zip;C:\Program Files\Java\javafx-sdk-14\lib\javafx-swt.jar;C:\Program Files\Java\javafx-sdk-14\lib\javafx.web.jar;C:\Program Files\Java\javafx-sdk-14\lib\javafx.base.jar;C:\Program Files\Java\javafx-sdk-14\lib\javafx.fxml.jar;C:\Program Files\Java\javafx-sdk-14\lib\javafx.media.jar;C:\Program Files\Java\javafx-sdk-14\lib\javafx.swing.jar;C:\Program Files\Java\javafx-sdk-14\lib\javafx.controls.jar;C:\Program Files\Java\javafx-sdk-14\lib\javafx.graphics.jar" -p "C:\Program Files\Java\javafx-sdk-14\lib\javafx.base.jar;C:\Program Files\Java\javafx-sdk-14\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: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$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.IllegalAccessError: class com.sun.javafx.fxml.FXMLLoaderHelper (in unnamed module #0x626c7b62) cannot access class com.sun.javafx.util.Utils (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.util to unnamed module #0x626c7b62
at com.sun.javafx.fxml.FXMLLoaderHelper.<clinit>(FXMLLoaderHelper.java:38)
at javafx.fxml.FXMLLoader.<clinit>(FXMLLoader.java:2056)
at sample.Main.start(Main.java:13)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$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