java.lang.NoClassDefFoundError: com/sun/jna/platform/win32/Shell32

I am using appdirs in a JavaFX application. appdirs throws exception in Windows 7 as below:

Exception in thread "JavaFX Application Thread" Exception in thread "main" 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 sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.NullPointerException
        at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:383)
        at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
        ... 5 more
java.lang.NoClassDefFoundError: com/sun/jna/platform/win32/Shell32
        at net.harawata.appdirs.impl.ShellFolderResolver.resolveFolder(ShellFolderResolver.java:38)
        at net.harawata.appdirs.impl.WindowsAppDirs.getLocalAppData(WindowsAppDirs.java:71)
        at net.harawata.appdirs.impl.WindowsAppDirs.getUserDataDir(WindowsAppDirs.java:33)
        at net.harawata.appdirs.AppDirs.getUserDataDir(AppDirs.java:28)
        at com.erayerdin.corpustk.App.<clinit>(App.java:19)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplicationWithArgs$155(LauncherImpl.java:352)
        at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
        at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformI
mpl.java:294)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.sun.jna.platform.win32.Shell32
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 16 more

It works in Linux, though. Adding com.sun.jna as a Maven dependency does not work as well.

---

Environment

• Microsoft Windows [Version 6.1.7601] (stands for Windows 7)
• Java™ SE Runtime Environment (build 1.8.0_151-b12)
• Appdirs 1.0.0

[zak-pawel]

I can confirm that 1.0.1 solves problem. Thanks!

[harawata]

@erayerdin ,

No worries. I appreciate you took the time to report this!

@zak-pawel is right (thanks for the help!). I checked the dependency and it is jna-platform that is required by appdirs (jna is also required, but it will be automatically added because jna-platform depends on it).

Anyway, to make things simpler, I have modified the scope of jna-platform dependency to compile and released 1.0.1.