[vtkusers] vtk.util.* missing

[nikhil singhania]

hi all,
I have been writing code for vtk in java, i have added vtk.jar file but the
header
import vtk.util.VtkPanelContainer;
import vtk.util.VtkPanelUtil;
import vtk.util.VtkUtil;
which seems to be missing, my classpath and all things are right.
other codes are working except the ones that add vtk.util.* package..
please help me figure out what is the problem.