@Override
    public String toString() {
        String retour = "";
        int[][] tab = new int[nbLine][nbCol];
        
        try {
            tab = readMap();
        }
        catch(IOException e) {
            e.printStackTrace();
        }
        
        for(int i1 = 0; i1 < nbLine; i1++) {
            for(int i2 = 0; i2 < nbCol; i2++) {
                retour += tab[i1][i2];
            }
            retour += "\n";
        }
        
        return retour;
    }