There is possibility to use dll methods in J#. If you want to use a method from a dll of Black Ice, you have to use DllImport attribute on the following way:
/** @attribute DllImport("BiTiff.dll") */
public static native short GetNumberOfImagesInTiffFile(String FileName);
For more information visit to: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dv_vjsharp/html/vjgrfcallingnativemethodsfromjavasource.asp