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Using JNI Produced Jar Files: java.lang.UnsatisfiedLinkError

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On Windows 7, I am trying to use the JNI (Java Native Interface) to invoke a C++ method from java NetBeans 7.1.2 (Java SE Development Kit 7u4 x86 32-bit).

Background: I was given two dot jar files (produced using the NetBeans JNI process) to use in a project. The filenames of these two JNI produced files begin with "java".

My simple project consists of another dot java file. I'm, basically, just converting a working C++ project to a java project.

Below, I first import the JNI C++ class described via the associated jar file(s). The import information came from the JavaBeans "Projects" window listing above all the available JNI class names.

import com.one.two.three.My_Class;
//import com.six.seven.eight.*;

Second, in a java program constructor, I invoke the following static method:

        My_Class.a_first_test();

(I know the above method is static because the similar C++ program runs perfectly.)

Problem Description: This java project compiles. But when I run the program, I receive the below error message.

run:
Exception in thread "AWT-EventQueue-0" java.lang.UnsatisfiedLinkError: com.one.two.three.four.five_init()V
	at com.one.two.three.four.five_init(Native Method)
	at com.one.two.three.four.<clinit>(four.java:4746)
	at com.one.two.three.My_Class.a_first_test(My_Class.java:51)
	at My_Prj.<init>(My_Project.java:28)
	at My_Prj$11.run(My_Project.java:585)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:701)
	at java.awt.EventQueue.access$000(EventQueue.java:102)
	at java.awt.EventQueue$3.run(EventQueue.java:662)
	at java.awt.EventQueue$3.run(EventQueue.java:660)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:671)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)

My employeer told me I should not make public identifier names etc, so (above) I have carefully renamed code identifiers.

------

Here are the steps that I followed to try to fix the problem. These steps did not work!

(0) FYI: The contents of the jar files match (viewed via command jar tf jar-file) what is displayed by NetBeans.

(1) To gather information, I put the following line of code as the first line in the constructor:

      System.out.println(System.getProperty("java.library.path"));

I ran this program. The line of code gave me paths to folders such as:

C:\Program Files\Java\jdk1.7.0_04\bin;
C:\Windows\Sun\Java\bin;
C:\Windows\system32;
C:\Windows;
C:\Program Files\QuickTime\QTSystem\;
C:\Program Files\Microsoft SQL Server\100\Tools\Binn\;
C:\Program Files\Microsoft SQL Server\100\DTS\Binn\;
C:\Program Files\Microsoft SQL Server\90\Tools\binn\;.

(2) Since there was also a beansbinding-1.2.1.jar (and associated dot dll file) file in my project, I looked for two dot dll files that correspond to the two dot jar files given to me. I found none that had "java" pre-appended to the filenames, but I found two without "java" pre-appended to the filenames. So, I just copied and renamed the two files that I found and put them in one of the folders produced from step 1.

(3) Because of the beansbinding-1.2.1.jar file in my project, I copied my two dot jar files to the same folder. I did not rename any of the dot jar files.

(4) I compiled and ran the project in NetBeans, but I received the exact same error message.

------

Some References:

Error message:
http://stackoverflow.com/questions/10029555/exception-in-thread-awt-eventqueue-0-java-lang-unsatisfiedlinkerror-no-jnotif

Setting environment variable CLASSPATH required:
http://www.webdeveloper.com/forum/archive/index.php/t-60643.html

Thank you,

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Using JNI Produced Jar Files: java.lang.UnsatisfiedLinkError clusardi2k@aol.com - 2012-06-15 08:22 -0700
  Re: Using JNI Produced Jar Files: java.lang.UnsatisfiedLinkError clusardi2k@aol.com - 2012-06-16 22:47 -0700
  Re: Using JNI Produced Jar Files: java.lang.UnsatisfiedLinkError Roedy Green <see_website@mindprod.com.invalid> - 2012-06-16 23:02 -0700
    Re: Using JNI Produced Jar Files: java.lang.UnsatisfiedLinkError clusardi2k@aol.com - 2012-06-16 23:16 -0700
      Re: Using JNI Produced Jar Files: java.lang.UnsatisfiedLinkError clusardi2k@aol.com - 2012-06-16 23:46 -0700
      Re: Using JNI Produced Jar Files: java.lang.UnsatisfiedLinkError Roedy Green <see_website@mindprod.com.invalid> - 2012-06-18 02:27 -0700

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