public String toString() {
		String s, sep = "+";

		for (int i = 0; i < plateau.length; i++)
			sep += "---+";

		s = sep + "\n";
		for (int i = 0; i < plateau.length; i++) {
			s += "|";
			for (int j = 0; j < plateau[0].length; j++) {
				if (plateau[i][j] == null)
					s += "   |";
				else {
					if (plateau[i][j].getHaveBall()) {
						if (plateau[i][j].getColor().charAt(0) == 'N') {
							s += " n |";
						}
						if (plateau[i][j].getColor().charAt(0) == 'B') {
							s += " b |";
						}
					}

					else
						s += " " + plateau[i][j].getColor().charAt(0) + " |";
				}
			}
			s += "\n" + sep + "\n";
		}

		return s;
	}