What is the cause of an UnsatisfiedLinkError?

Question

When i am trying to run my program it is giving the following error

       Exception in thread "main" java.lang.UnsatisfiedLinkError: no jacob-1.14.3-x86 in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1682)
at java.lang.Runtime.loadLibrary0(Runtime.java:823)
at java.lang.System.loadLibrary(System.java:1030)
at com.jacob.com.LibraryLoader.loadJacobLibrary(LibraryLoader.java:184)
at com.jacob.com.JacobObject.<clinit>(JacobObject.java:108)
at javaSMSTest.main(javaSMSTest.java:18)

please help

Answer 1

From the Javadoc:

Thrown if the Java Virtual Machine cannot find an appropriate native-language definition of a method declared native.

It is an error related to JNI. loadJacobLibrary is trying to load the native library called jacob-1.14.3-x86 and it is not found on the path defined by java.library.path. This path should be defined as a system property when you start the JVM. e.g.

-Djava.library.path=<dir where jacob library is>

On Windows, the actual native library file will be called jacob-1.14.3-x86.dll while on Linux it would be called libjacob-1.14.3-x86.so

Answer 2

You need the jacob-1.14.3-x86 library on your java library path.

On windows, this would be jacob-1.14.3-x86.dll.

This is a binary file which is used by java to run native methods. It's probably required by some library (jar) you're using.

In here you can see not only a jar, but also the binary required by the jar. Pick the one for your platform.