Adding coroutines-javafx dependency causing ClassNotFoundException JDK11 on mac

[vehovsky]

Adding a dependency:

<dependency>
    <groupId>org.jetbrains.kotlinx</groupId>
    <artifactId>kotlinx-coroutines-javafx</artifactId>
    <version>1.4.0</version>
</dependency>

to generated maven project (from javafx-archetype-simple)

execute:

mvn javafx:run

[INFO] --- javafx-maven-plugin:0.0.5:run (default-cli) @ JavaFX_JDK11_Test ---
GLFactory.static - Platform: Mac OS X - not available: com.sun.prism.es2.MacGLFactory
java.lang.ClassNotFoundException: com.sun.prism.es2.MacGLFactory
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:315)
	at javafx.graphics/com.sun.prism.es2.GLFactory$FactoryLoader.run(GLFactory.java:108)
	at javafx.graphics/com.sun.prism.es2.GLFactory$FactoryLoader.run(GLFactory.java:100)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at javafx.graphics/com.sun.prism.es2.GLFactory.<clinit>(GLFactory.java:97)
	at javafx.graphics/com.sun.prism.es2.ES2Pipeline.<clinit>(ES2Pipeline.java:76)
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:315)
	at javafx.graphics/com.sun.prism.GraphicsPipeline.createPipeline(GraphicsPipeline.java:187)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.init(QuantumRenderer.java:91)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:124)
	at java.base/java.lang.Thread.run(Thread.java:834)
java.lang.ClassNotFoundException: com.sun.glass.ui.mac.MacPlatformFactory
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:315)
	at javafx.graphics/com.sun.glass.ui.PlatformFactory.getPlatformFactory(PlatformFactory.java:42)
	at javafx.graphics/com.sun.glass.ui.Application.run(Application.java:144)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:258)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:269)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:158)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.startToolkit(LauncherImpl.java:658)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:409)
	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:566)
	at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Exception in thread "main" java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.NullPointerException
	at javafx.graphics/com.sun.glass.ui.Application.run(Application.java:144)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:258)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:269)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:158)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.startToolkit(LauncherImpl.java:658)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:409)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
	... 5 more

[elizarov]

Are you sure it is related to coroutines in any way? Can you use JavaFx from this project (w/o coroutines)?

[vehovsky]

When you remove the dependency on kotlinx-coroutines-javafx from pom.xml the example runs as expected.

[elizarov]

Hm. It does not run for me at all (both ways) due to a different exception. However, what I see is that the plugin that we use to produce JavaFx dependencies in our build adds incorrect dependencies to the POM file. See here: https://repo.maven.apache.org/maven2/org/jetbrains/kotlinx/kotlinx-coroutines-javafx/1.4.1/kotlinx-coroutines-javafx-1.4.1.pom
It adds linux classifier to all JavaFx dependencies, thus creating a conflict in your case.

[vehovsky]

Ah you are right. I should have noticed that. Thanks!