JavaFX Webkit on Raspberry Pi 2 / Raspbian Jessie - javafx

Question

I installed JavaFX (OpenJFX, Gluon JavaFX Embedded SDK 8.60.7) with the help of this thread JavaFX on ARM running jdk1.8.0 onto a Java8 SDK. I can execute simple JavaFX applications now. But when i use the WebView, the following error occurs:
pi#raspberrypi:~ $ sudo ./jdk1.8.0_91/jre/bin/java -jar fxtest.jar
Java HotSpot(TM) Client VM warning: You have loaded library /home/pi/jdk1.8.0_91/jre/lib/arm/libjfxwebkit.so which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
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:498)
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:498)
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$76(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.UnsatisfiedLinkError: /home/pi/jdk1.8.0_91/jre/lib/arm/libjfxwebkit.so: /home/pi/jdk1.8.0_91/jre/lib/arm/libjfxwebkit.so: falsche ELF-Klasse: ELFCLASS64 (Possible cause: architecture word width mismatch)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
at java.lang.Runtime.load0(Runtime.java:809)
at java.lang.System.load(System.java:1086)
at com.sun.glass.utils.NativeLibLoader.loadLibraryFullPath(NativeLibLoader.java:201)
at com.sun.glass.utils.NativeLibLoader.loadLibraryInternal(NativeLibLoader.java:94)
at com.sun.glass.utils.NativeLibLoader.loadLibrary(NativeLibLoader.java:39)
at com.sun.webkit.WebPage.lambda$static$2(WebPage.java:130)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.webkit.WebPage.<clinit>(WebPage.java:129)
at javafx.scene.web.WebEngine.<init>(WebEngine.java:858)
at javafx.scene.web.WebEngine.<init>(WebEngine.java:845)
at javafx.scene.web.WebView.<init>(WebView.java:273)
at application.Main$Browser.<init>(Main.java:38)
at application.Main.start(Main.java:22)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$83(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$61(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$59(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$60(PlatformImpl.java:294)
at com.sun.glass.ui.monocle.RunnableProcessor.runLoop(RunnableProcessor.java:92)
at com.sun.glass.ui.monocle.RunnableProcessor.run(RunnableProcessor.java:51)
... 1 more
Exception running application application.Main
ELFCLASS64 (Possible cause: architecture word width mismatch)???
Whats wrong with libjfxwebkit.so?