如何在 DecimalFormat 中使用空格作为分组分隔符？

Question

I working on a Google Chart. The API uses the DecimalFormat (ICU4J 53.1) . I am aiming this format:

### ### meters

But I can't find it inside the documentation . Is there a work around for it?

Answer 1

If you have access to the DecimalFormat object, you can adjust it as follows:

DecimalFormatSymbols formatSymbols = format.getDecimalFormatSymbols();
formatSymbols.setGroupingSeparator(' ');
format.setDecimalFormatSymbols(formatSymbols);

If you only have access to the format string, then you cannot achieve your goal. The DecimalFormat class formats numbers according to the locale and the grouping separator is taken from that.