How to change the decimal separator of DecimalFormat from comma to dot point

Question

I have this little crazy method that converts BigDecimal values into nice and readable Strings   private String formatBigDecimal BigDecimal bd       DecimalFormat df   new DecimalFormat        df setMinimumFractionDigits 3       df setMaximumFractionDigits 3       df setMinimumIntegerDigits 1       df setMaximumIntegerDigits 3       df setGroupingSize 20       return df format bd       It however  also produces a so called grouping separator     that makes all my values come out like this   xxx xxx   I do need the separator to be a dot or a point and not a comma   Does anybody have a clue of how to accomplish this little feat   I have read this and in particular this to death now but I cannot find a way to get this done  Am I approaching this the wrong way  Is there a much more elegant way of doing this  Maybe even a solution that accounts for different local number representations  since the comma would be perfect by European standards

User · Answer

Europe is quite huge  I m not sure if they use the same format all over  However this or this answer will be of help   String text    1 234567   NumberFormat nf in   NumberFormat getNumberInstance Locale GERMANY   double val   nf in parse text  doubleValue     NumberFormat nf out   NumberFormat getNumberInstance Locale UK   nf out setMaximumFractionDigits 3   String output   nf out format val     I e  use the correct locale

User · Answer

You can change the separator either by setting a locale or using the DecimalFormatSymbols   If you want the grouping separator to be a point  you can use an european locale   NumberFormat nf   NumberFormat getNumberInstance Locale GERMAN   DecimalFormat df    DecimalFormat nf    Alternatively you can use the DecimalFormatSymbols class to change the symbols that appear in the formatted numbers produced by the format method  These symbols include the decimal separator  the grouping separator  the minus sign  and the percent sign  among others   DecimalFormatSymbols otherSymbols   new DecimalFormatSymbols currentLocale   otherSymbols setDecimalSeparator       otherSymbols setGroupingSeparator        DecimalFormat df   new DecimalFormat formatString  otherSymbols     currentLocale can be obtained from Locale getDefault   i e    Locale currentLocale   Locale getDefault

User · Answer

public String getGermanCurrencyFormat double value        NumberFormat nf   NumberFormat getNumberInstance Locale GERMAN       nf setGroupingUsed true       return          nf format value

User · Answer

String money   output replace

User · Answer

This worked for me        double num   10025000      new DecimalFormat  quot          quot        DecimalFormat df    DecimalFormat  DecimalFormat getInstance Locale GERMAN       System out println df format num

User · Answer

BigDecimal does not seem to respect Locale settings   Locale getDefault      returns sl SI   Slovenian locale should have a decimal comma  Guess I had strange misconceptions regarding numbers   a   new BigDecimal  1 2     throws exception a   new BigDecimal  1 2     is ok  a toPlainString      returns  1 2  always   I have edited a part of my message that made no sense since it proved to be due the human error  forgot to commit data and was looking at the wrong thing    Same as BigDecimal can be said for any Java  toString   functions  I guess that is good in some ways  Serialization for example or debugging  There is an unique string representation   Also as others mentioned using formatters works OK  Just use formatters  same for the JSF frontend  formatters do the job properly and are aware of the locale

User · Answer

you could just use replace function before you return the string in the method return df format bd  replace  quot   quot    quot   quot

User · Answer

This worked in my case  DecimalFormat df2   new DecimalFormat  quot      quot               df2 setDecimalFormatSymbols DecimalFormatSymbols getInstance Locale ENGLISH

[java] How to change the decimal separator of DecimalFormat from comma to dot/point?

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