code: @Override
  	public Object getValueAt(final int row, final int column) {
  		final Vector rowVector = (Vector) this.dataVector.elementAt(row);
  		return rowVector.elementAt(column);
  	}
docs: Returns an attribute value for the cell at <code>row</code> and
  <code>column</code>.
  
  @param row    the row whose value is to be queried
  @param column the column whose value is to be queried
  @return the value Object at the specified cell
  @exception ArrayIndexOutOfBoundsException if an invalid row or column was
  given