@Override
    public Class<?> getColumnClass(int columnIndex)  {
        switch (columnIndex) {
            case 0:
                return Integer.class;
            case 1:
                return String.class;
            case 2:
                return String.class;
            case 3:
                return String.class;
            case 4:
                return String.class;
            default:
                throw new RuntimeException("coluna inválida");
                
        }        
    }