@Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        Client client = clients.get(rowIndex);
        switch (columnIndex){
            case 0:return client.getIdClient();
            case 1:return client.getNom();
            case 2:return client.getPrenom();
            case 3:return client.getEmail(); 
            case 4: return client.getNbrSignalisation();
            default:return 0;
        }
    }