Raspberry Pi 2 Java Project

[Parufrade]

I have an JavaFX application that runs perfectly on a normal desktop. I am trying to make it run on a Raspberry Pi 2 (1GB) but I am not able to. I really need some help because I need to use the PI to deploy this application to some costumers.

These are the details and error messages:

Raspberry Pi 2 B

java version "1.8.0"
Java(TM) SE Runtime Environment (build 1.8.0-b132)
Java HotSpot(TM) Client VM (build 25.0-b70, mixed mode)

ERRORS:

pi@raspberrypi ~ $ java -jar KangarooAdmin.jar
java.lang.ClassNotFoundException: com.sun.deploy.uitoolkit.impl.fx.HostServicesFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:340)
at com.sun.javafx.application.HostServicesDelegate$1.run(HostServicesDelegate.java:57)
at com.sun.javafx.application.HostServicesDelegate$1.run(HostServicesDelegate.java:46)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.HostServicesDelegate.getInstance(HostServicesDelegate.java:45)
at javafx.application.HostServices.<init>(HostServices.java:52)
at javafx.application.Application.getHostServices(Application.java:323)
at kangarooadmin.KangarooAdmin.start(KangarooAdmin.java:58)
at com.sun.javafx.application.LauncherImpl$8.run(LauncherImpl.java:837)
at com.sun.javafx.application.PlatformImpl$7.run(PlatformImpl.java:335)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:301)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:298)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$6.run(PlatformImpl.java:298)
at com.sun.glass.ui.lens.LensApplication$RunnableEvent.dispatch(LensApplication.java:182)
at com.sun.glass.ui.lens.LensApplication._runLoop(LensApplication.java:860)
at com.sun.glass.ui.lens.LensApplication.access$1800(LensApplication.java:58)
at com.sun.glass.ui.lens.LensApplication$4.run(LensApplication.java:917)
at java.lang.Thread.run(Thread.java:744)
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:367)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:305)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:894)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:56)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:158)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.NullPointerException
at javafx.application.HostServices.getCodeBase(HostServices.java:67)
at kangarooadmin.KangarooAdmin.start(KangarooAdmin.java:58)
at com.sun.javafx.application.LauncherImpl$8.run(LauncherImpl.java:837)
at com.sun.javafx.application.PlatformImpl$7.run(PlatformImpl.java:335)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:301)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:298)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$6.run(PlatformImpl.java:298)
at com.sun.glass.ui.lens.LensApplication$RunnableEvent.dispatch(LensApplication.java:182)
at com.sun.glass.ui.lens.LensApplication._runLoop(LensApplication.java:860)
at com.sun.glass.ui.lens.LensApplication.access$1800(LensApplication.java:58)
at com.sun.glass.ui.lens.LensApplication$4.run(LensApplication.java:917)
... 1 more
Exception running application kangarooadmin.KangarooAdmin

[DougieLawson]

Don't you just love Java stack traces, they so clearly describe the failure, NOT.

You've got a null pointer exception in Kangaroo.Java line #58.

[Parufrade]

Yes, the stack trace shows that but it is working perfectly on any desktop. It seems that the null pointer error is due to this problem: java.lang.ClassNotFoundException: com.sun.deploy.uitoolkit.impl.fx.HostServicesFactory

As you see, I am using the Java 1.8.0 on Raspberry and it supposed to have JavaFX on it. Does't it?

[DougieLawson]

http://www.oracle.com/webfolder/technet ... rryfx.html

Starting from "Building a Basic JavaFX Application" on that page.

[Parufrade]

Hello Dougie

I finally solved the problem. Some JavaFX libraries are not included in Java 1.8.0 which came with the PI. I had to remove two of them from my application. Now it is working! Thanks for the help!

Marco
A brazilian living in India!!

[abigdreamer]

I to want to get Objectwheel running on a Raspberry Pi (2) and would love some advice --- help -- image file -- etc.

Thanks in advance

Mike Tallent
CEO
Objectwheel
mikegps1@gmail.com