title: JNI without source code (UnsatisfiedLinkError)
body: <p>I need to call a COM object written in C++ via Java JNI.
  I don't have documentation of the COM object API so I was wondering if there is a way to "enquire" the object itself.
  I have an example written in VBA which calls one function on the COM object, but when I try to replicate the same call using a JNI native methoud I get the following error.
  I assume I'm making a mistake in one of the arguments types or the return type (VBA doesn't define the return type).</p>
  
  <pre><code>Exception in thread "main" java.lang.UnsatisfiedLinkError: MyWrapper.functionOne(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/Boolean;)V
  at MyWrapper.funtionOne(Native Method)
  at MyWrapper.main(MyWrapper.java:22)
  </code></pre>