/**
   The InspectableVector interface specifies a sequence of elements that
   supports access to its elements by their ranks.  The vector cannot
   be changed.
   A rank is invalid if it is smaller than 0 or greater than or equal
   to the size of the ranked sequence.

   @author      Franck van Breugel
   @version     1.5    March 2, 2001
*/
public interface InspectableVector extends InspectableContainer
{
    /**
       Returns the element of this vector with the specified rank.

       @param rank The rank of the element to be returned.
       @return The element of this vector with the specified rank.
       @exception BoundaryViolationException if the specified rank is invalid.
    */
    public Object elemAtRank(int rank) throws BoundaryViolationException;
}