Formatter The Formatter class is the base class for all data formatters.
 NumberBase The NumberBase class is a utility class that contains general number formatting capabilities, including rounding, precision, thousands formatting, and negative sign formatting.
 NumberBaseRoundType The NumberBaseRoundType class defines the constant values for formatter properties that specify a type of rounding.
 NumberFormatter The NumberFormatter class formats a valid number by adjusting the decimal rounding and precision, the thousands separator, and the negative sign.