[vtkusers] vtk4.0 + Java: UnsatisfiedLinkError: VTKInit solved

[Peter J. Carr]

I had problems running Regression.java. The problem has to do with how 
the vtk java classes are found by the class loader. In all cases I 
created a jar file (vtk.jar) containing all of the automatically 
generated java classes. This does not include vtkPanel. When I ran 
Regression as such:
    java -classpath .:vtk.jar Regression
I encountered no error.
When I moved vtk4.0.jar from my local directory to 
/usr/local/java/jre/lib/ext/vtk4.0.jar (part of my java installation 
directory) and then ran Regression as such:
    java Regression
I get no error loading the shared libraries, but I get the following 
error the first time I use one of the vtk java classes.

Exception in thread "main" java.lang.UnsatisfiedLinkError: VTKInit
    at vtk.vtkRenderWindow.VTKInit(Native Method)
    at vtk.vtkObject.<init>(vtkObject.java:97)
    at vtk.vtkWindow.<init>(vtkWindow.java:166)
    at vtk.vtkRenderWindow.<init>(vtkRenderWindow.java:358)
    at Regression.main(Regression.java:30)

I will have to read a bit more about java class loading to understand 
why one way works and the other way doesn't.


- Peter Carr