How Can I Change the Decimal Separator in Java\'s DecimalFormat?

Changing Decimal Separators in Java with DecimalFormat

DecimalFormat provides a convenient way to format BigDecimal values into human-readable strings. However, using the default settings can result in a comma-separated grouping separator. For applications that require dot or point separators, there are two main approaches:

Setting a Specific Locale

By setting an appropriate locale, the decimal separator can be changed according to the formatting conventions of that locale. For example, using the GERMAN locale would result in a point as the separator:

NumberFormat nf = NumberFormat.getNumberInstance(Locale.GERMAN);
DecimalFormat df = (DecimalFormat)nf;

Using DecimalFormatSymbols

Alternatively, DecimalFormatSymbols allows for the customization of symbols used in formatted numbers. To change the grouping separator to a point:

DecimalFormatSymbols otherSymbols = new DecimalFormatSymbols(currentLocale);
otherSymbols.setDecimalSeparator(',');
otherSymbols.setGroupingSeparator('.'); 
DecimalFormat df = new DecimalFormat(formatString, otherSymbols);

where currentLocale can be obtained using Locale.getDefault().

This approach provides greater flexibility in customizing the separator and other number formatting symbols based on specific requirements and local conventions.

The above is the detailed content of How Can I Change the Decimal Separator in Java\'s DecimalFormat?. For more information, please follow other related articles on the PHP Chinese website!