Format negative amount of USD with a minus sign, not brackets (Java)

java currency number-formatting
Žygimantas picture Žygimantas · Jan 13, 2010 · Viewed 30k times · Source

How do I get NumberFormat.getCurrencyInstance() to print negative USD currency values with a minus sign?

Answer

ageektrapped picture ageektrapped · Oct 12, 2010

It requires a little tweaking of the DecimalFormat returned by NumberFormat.getCurrencyInstance() to do it in a locale-independent manner. Here's what I did (tested on Android):

DecimalFormat formatter = (DecimalFormat)NumberFormat.getCurrencyInstance();
String symbol = formatter.getCurrency().getSymbol();
formatter.setNegativePrefix(symbol+"-"); // or "-"+symbol if that's what you need
formatter.setNegativeSuffix("");

IIRC, Currency.getSymbol() may not return a value for all locales for all systems, but it should work for the major ones (and I think it has a reasonable fallback on its own, so you shouldn't have to do anything)

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