Whats the difference between ICU4J NumberFormat and the standard NumberFormat?
The ICU4J NumberFormat package contains modified versions of the standard JDK classes NumberFormat, DecimalFormat, DecimalFormatSymbols, and internal classes. The modified classes do everything the standard classes do, and then some. • ICU4J’s NumberFormat formats and parses BigInteger and BigDecimal, in addition to double and long values. • If a long overflows in JDK 1.2, it becomes a double. For instance, if you format something close to Long.MAX_VALUE with a percent format, it will be cast to a double, losing some precision. With ICU4J NumberFormat, it will overflow to a BigInteger, with no loss of information. • Higher performance formatting of longs. • During parsing, BigDecimal objects are returned instead of Double objects to represent non-integral values. Double objects are only returned to represent values which cannot be stored in a BigDecimal. These are NaN, Infinity, -Infinity, and -0. All other values are returned as Long, BigInteger, or BigDecimal values. Clients who prev
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