@Override
    public Class<?> getColumnClass(int columnIndex)
    {
        switch (columnIndex)
        {
            case 0:
                return Integer.class;
            case 1:
                return Order.class;
            case 2:
                return Date.class;
            case 3:
                return Date.class;
            case 4:
                return String.class;
            case 5:
                return Tech.class;
            case 6:
                return String.class;
        }
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }