* @return the Class of the column being queried
     */
    public Class getColumnClass(int column) {
        Class columnClass = null;

        //  Get the class, if set, for the specified column

        if (column < columnClasses.length)
            columnClass = columnClasses[column];

        //  Get the default class

        if (columnClass == null)
            columnClass = super.getColumnClass(column);

        return columnClass;
    }