public  void addTableModelListener(TableModelListener l) 
{
        listenerList.add(TableModelListener.class, l);
}

 public int findColumn(String columnName) 
{
        int result = -1;
        for (int i = 0; i <  columnName.length(); i++) {
            int index = letterToIndex(columnName.charAt(i));
            if (index == -1) {
                return -1;
            }
            result = 26 * (result + 1) + index;
        }
        return result <  getColumnCount() ? result : -1;
}

 public  void fireTableCellUpdated(int row,
    int column) 
{
        TableModelListener[] listeners = getTableModelListeners();
        if (listeners.length == 0) {
            return;
        }
        fireTableChanged(new TableModelEvent(this, row, row, column, TableModelEvent.UPDATE));
}

 public  void fireTableChanged(TableModelEvent e) 
{
        TableModelListener[] listeners = getTableModelListeners();
        for (int i = 0; i <  listeners.length; i++) {
            listeners[i].tableChanged(e);
        }
}

 public  void fireTableDataChanged() 
{
        TableModelListener[] listeners = getTableModelListeners();
        if (listeners.length == 0) {
            return;
        }
        fireTableChanged(new TableModelEvent(this));
}

 public  void fireTableRowsDeleted(int firstRow,
    int lastRow) 
{
        TableModelListener[] listeners = getTableModelListeners();
        if (listeners.length == 0) {
            return;
        }
        fireTableChanged(new TableModelEvent(this, firstRow, lastRow, TableModelEvent.ALL_COLUMNS, TableModelEvent.DELETE));
}

 public  void fireTableRowsInserted(int firstRow,
    int lastRow) 
{
        TableModelListener[] listeners = getTableModelListeners();
        if (listeners.length == 0) {
            return;
        }
        fireTableChanged(new TableModelEvent(this, firstRow, lastRow, TableModelEvent.ALL_COLUMNS, TableModelEvent.INSERT));
}

 public  void fireTableRowsUpdated(int firstRow,
    int lastRow) 
{
        TableModelListener[] listeners = getTableModelListeners();
        if (listeners.length == 0) {
            return;
        }
        fireTableChanged(new TableModelEvent(this, firstRow, lastRow, TableModelEvent.ALL_COLUMNS, TableModelEvent.UPDATE));
}

 public  void fireTableStructureChanged() 
{
        TableModelListener[] listeners = getTableModelListeners();
        if (listeners.length == 0) {
            return;
        }
        fireTableChanged(new TableModelEvent(this, TableModelEvent.HEADER_ROW));
}

 public Class<?> getColumnClass(int columnIndex) 
{
        return Object.class;
}

 public String getColumnName(int column) 
{
        StringBuilder result = new StringBuilder();
        int rest = column;
        do {
            int remainder = rest % 26;
            result.append(indexToLetter(remainder));
            rest = rest / 26 - 1;
            if (rest == 0) {
                result.append(indexToLetter(0));
            }
        } while (rest  > 0);
        return result.reverse().toString();
}

 public T[] getListeners(Class<T> listenerType) 
{
        return listenerList.getListeners(listenerType);
}

 public TableModelListener[] getTableModelListeners() 
{
        return (TableModelListener[])listenerList.getListeners(TableModelListener.class);
}

 public boolean isCellEditable(int rowIndex,
    int columnIndex) 
{
        return false;
}

 public  void removeTableModelListener(TableModelListener l) 
{
        listenerList.remove(TableModelListener.class, l);
}

 public  void setValueAt(Object value,
    int rowIndex,
    int columnIndex) 
{

}