question: private static void adjustForCurrencyDefaultFractionDigits ( DecimalFormat format , DecimalFormatSymbols symbols ) { Currency currency = symbols . getCurrency ( ) ; if ( currency == null ) { try { currency = Currency . getInstance ( symbols . getInternationalCurrencySymbol ( ) ) ; } catch ( IllegalArgumentException e ) { } } if ( currency != null ) { int digits = currency . getDefaultFractionDigits ( ) ; if ( digits != - 1 ) { int oldMinDigits = format . getMinimumFractionDigits ( ) ; if ( oldMinDigits == format . getMaximumFractionDigits ( ) ) { format . setMinimumFractionDigits ( digits ) ; format . setMaximumFractionDigits ( digits ) ; } else { format . setMinimumFractionDigits ( Math . min ( digits , oldMinDigits ) ) ; format . setMaximumFractionDigits ( digits ) ; } } } }
target:  Adjusts the minimum and maximum fraction digits to values that are reasonable for the currency's default fraction digits.