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JNI library missing

I am trying to run a test file InspectVM from libguestfs library inorder to have accesss to a disk image in windows. However, I have the following errors on my console
run:
Exception in thread "main" java.lang.UnsatisfiedLinkError: no guestfs_jni in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1864)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1122)
at madjava.com.redhat.et.libguestfs.GuestFS.<clinit>(GuestFS.java:51)
at madjava.examples.InspectVM.main(InspectVM.java:30)
C:\Users\CyberSOFONET\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 0 seconds)#
I searched allover the internet and find that I should set java.libraly.path pointing to location of the guestfs_jni. my major problem is that I do not have any file with that name guestfs_jni. Do I need to make one myself or can I find it somewhere. any kind of help is appriciated. am a newbie in JNI so I dont have much imformation on it

You're looking for a file called guestfs_jni.dll. Usually the native library comes with the jar file.
From http://libguestfs.org/guestfs-java.3.html:
Libguestfs for Java is a Java Native Interface (JNI) extension, supplied in three parts: libguestfs.jar, libguestfs-VERSION.jar, libguestfs_jni.so, libguestfs.so
So the distribution comes with libguest_jni.so which ist for Linux and not for Windows. IIRC, there is no libguestfs for Windows. So you would first have to find out if it is even possible to compile libguestfs using Cygwin and if yes build it yourself.
If you're on Windows 10 you could try installing libguestfs and a Java runtime for the Linux subsystem and run inside the subsystem.

Cannot get Jep to work with Eclipse

For one of my projects I have the need to mix Java with some well established Python code, so I turned my attention to JEP as this seems to be the perfect solution to my problem. I am using Java 1.8 and Python 3.6 on Mac OSX, and my Java IDE is Eclipse.
Unfortunately, I struggle to get this to work, mainly because I am really a newby I think.
In Eclipse, I have set my Build path to include the 'jep-3.7.1.jar', and I have also linked the path to the native '.so' file to 'Users/me/anaconda3/lib/python3.6/site-packages/jep/'. So it seems like I have done everything I need, but when I try to run a simple code that calls for a Jep object I get the following naste exception:
Exception in thread "main" java.lang.UnsatisfiedLinkError: /Users/me/anaconda3/lib/python3.6/site-packages/jep/jep.cpython-36m-darwin.so: dlopen(/Users/me/anaconda3/lib/python3.6/site-packages/jep/jep.cpython-36m-darwin.so, 1): Library not loaded: #rpath/libpython3.6m.dylib
Referenced from: /Users/me/anaconda3/lib/python3.6/site-packages/jep/jep.cpython-36m-darwin.so
Reason: image not found
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1861)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1122)
at jep.Jep.<clinit>(Jep.java:217)
at mixingPython.mixJvcPyth.getDataFromPython(mixJvcPyth.java:11)
at mixingPython.mixJvcPyth.main(mixJvcPyth.java:29)/
I am sure that this is basic, but if anyone could help it would be great!
Cedric

java.lang.UnsatisfiedLinkError: no so in java.library.path

When i'm trying to load the .so file from the Java, i'm getting error like this.
Exception in thread "main" java.lang.UnsatisfiedLinkError: no yeslib.so in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1681)
at java.lang.Runtime.loadLibrary0(Runtime.java:840)
at java.lang.System.loadLibrary(System.java:1047)
at com.rct.micros.util.GetCustClass.getScratchCode(GetCustClass.java:76)
at com.rct.micros.util.GetCustClass.main(GetCustClass.java:39)
I have tried System.load(absoulte path) and System.loadLibrary(sofilename). Both are giving the same error. When i copy this so file into usr/lib/jvm package, it is working..
can anyone help how to get this solved using Java. i'm running on linux box.

It's possible that the library is on your path, but it can't be loaded for some other reason.
A trick I've used to debug problems like this is to run java -Xrunsofilename
-Xrun is the JVM option to load JVMPI libraries (the old profiling interface). If it succeeds, it will load the library and complain that it's not an agent library. But if it fails (hopefully!) it will print an error message. This is usually a more descriptive error message than what you get from the UnsatisfiedLinkError.

Can't find/load swt-gtk

I'm trying to run an internal web browser using JWebBrowser. When I run the application in Netbeans environment it works perfectly. However, when I build the project and run the jar file I'm getting the following error:
NativeSwing[1]: Exception in thread "main" java.lang.UnsatisfiedLinkError: Could
not load SWT library. Reasons:
NativeSwing[1]: no swt-gtk-3721 in java.library.path
NativeSwing[1]: no swt-gtk in java.library.path
NativeSwing[1]: Can't load library: C:\Users\CCS.swt\lib\win32\amd64\swt-gtk-3721.dll
NativeSwing[1]: Can't load library: C:\Users\CCS.swt\lib\win32\amd64\swt-gtk.dll
I'm including the following libraries to the project:
DJNativeSwing.jar
DJNativeSwing-SWT.jar
DJNativeSwing-SWTAPI.jar
DJNativeSwing-SWTCore.jar
MozillaInterfaces-1.8.1.3.jar
swt.jar (version 3.7M5 for 64 bits.)
jna_WindowUtils.jar
jna-3.2.4.jar
and they're referenced by Manifest.MF by this way
Class-Path: lib/DJNativeSwing-SWT.jar lib/DJNativeSwing-SWTAPI.jar lib
/DJNativeSwing-SWTCore.jar lib/MozillaInterfaces-1.8.1.3.jar lib/DJNa
tiveSwing.jar lib/swt.jar lib/jna-3.2.4.jar lib/jna_WindowUtils.jar
What am I doing wrong?
Thank you.

You need to specify the java.library.path in the java command and aim it at the path to your .dll files. For example,
java -Djava.library.path=lib -cp ...

Ok, I found the solution. The problem was about the dll generation. I was using 3.7m5 version, I downloaded a previous version (3.7) and the application ran properly.
Thank you for your help.
Regards.

Getting Java3D to work in Eclipse

I am trying to get J3D to work in Eclipse and have read forum after forum but can't seem to fix my problem. I am using ubuntu 11.10
I have done this:
0) unzipped j3d-1_5_2-linux-i586 in home/j3d directory then added i386 folder to usr/lib/jvm/java-6-openjdkjre/lib/i386
1) Window--> Preferences--> User Libraries --> New and added the three .jar files (j3dcore.jar, j3dutils.jar, vecmath.core)
2) Added a native library location to point to usr/lib/jvm/java-6-openjdkjre/lib/i386 where the .so files are
Some sources say try adding the .jar files to your Classpath Variable which didn't fix the problem for me.
I keep getting
Exception in thread "main" java.lang.UnsatisfiedLinkError: /usr/lib/jvm/java-6-openjdk/jre/lib/amd64/libj3dcore-ogl.so: /usr/lib/jvm/java-6-openjdk/jre/lib/amd64/libj3dcore-ogl.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1750)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1667)
at java.lang.Runtime.loadLibrary0(Runtime.java:840)
at java.lang.System.loadLibrary(System.java:1047)
at javax.media.j3d.NativePipeline$1.run(NativePipeline.java:231)
at java.security.AccessController.doPrivileged(Native Method)
at javax.media.j3d.NativePipeline.loadLibrary(NativePipeline.java:200)
at javax.media.j3d.NativePipeline.loadLibraries(NativePipeline.java:157)
at javax.media.j3d.MasterControl.loadLibraries(MasterControl.java:987)
at javax.media.j3d.VirtualUniverse.(VirtualUniverse.java:299)
at Hello3d.(Hello3d.java:13)
at Hello3d.main(Hello3d.java:27)

I had the same problems. Most tutorials tell you to assign an new library, but i mixed the Java3D files with the JDK files and re installed eclipse. If this doesn't work use net Beans.