code: public void newRowsAdded(final TableModelEvent e) {
  		justifyRows(e.getFirstRow(), e.getLastRow() + 1);
  		fireTableChanged(e);
  	}
docs: Ensures that the new rows have the correct number of columns. This is
  accomplished by using the <code>setSize</code> method in <code>Vector</code>
  which truncates vectors which are too long, and appends <code>null</code>s if
  they are too short. This method also sends out a <code>tableChanged</code>
  notification message to all the listeners.
  
  @param e this <code>TableModelEvent</code> describes where the rows were
  added. If <code>null</code> it assumes all the rows were newly added
  @see #getDataVector