code: @Override
  	public void setValueAt(final Object aValue, final int row, final int column) {
  		final Vector rowVector = (Vector) this.dataVector.elementAt(row);
  		rowVector.setElementAt(aValue, column);
  		fireTableCellUpdated(row, column);
  	}
docs: Sets the object value for the cell at <code>column</code> and
  <code>row</code>. <code>aValue</code> is the new value. This method will
  generate a <code>tableChanged</code> notification.
  
  @param aValue the new value; this can be null
  @param row    the row whose value is to be changed
  @param column the column whose value is to be changed
  @exception ArrayIndexOutOfBoundsException if an invalid row or column was
  given