Are there any known limitations of ICU4J NumberFormat?
• The rounding increment is limited to 18 digits (the number of digits fully representable in a long). • All padding configurations cannot be represented in a pattern. In other words, it’s possible to make API calls to set up a pattern with padding. Then, if a pattern is created for that format, it won’t fully expressing the padding parameters. This is actually generally true of many attributes of many of the formatting classes. • All rounding configurations cannot be represented in a pattern.