[vtkusers] Java / VTK problems
jeff at cdnorthamerica.com
Wed May 9 13:40:14 EDT 2001
Perhaps some code would be in order? I can say from experience that if you are manually
deleting vtk objects in java, bad things will happen because of the recent implementation of
weak-references in the vtk JNI. I have not had any experiences like yours, however, but I
could look at your code. What version of vtk?
Michael Bell wrote:
> I, and others have posted a few messages about problems that occur when
> using java under vtk. An example of the issue is:
> 1. Set up a scene
> 2. On every mouse click, change the color of an actor with
> 3. Intermittently, actor.GetProperty() returns null (not limited to
> GetProperty(). In general, members of a class become null randomly).
> With the help of others, I can say that
> 1. This problem does not occur in unix
> 2. This problem does not occur in C++ with nearly identical code
> Does anyone, especially a vtk developer, have any information about
> solutions or workarounds? Have you even run into this problem before? It
> sounds like a garbage collection issue to me. Could it be a JNI issue
> unrelated to VTK? Please help; this is a showstopping problem.
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