public static String doubleToString(double d) {
		if (Double.isInfinite(d) || Double.isNaN(d)) {
			return "null";
		}
		String string = Double.toString(d);
		if (string.indexOf('.') > 0 && string.indexOf('e') < 0
				&& string.indexOf('E') < 0) {
			while (string.endsWith("0")) {
				string = string.substring(0, string.length() - 1);
			}
			if (string.endsWith(".")) {
				string = string.substring(0, string.length() - 1);
			}
		}
		return string;
	}