如何使用Java的DecimalFormat中的点添加到货币？

Question

I'm trying to find a way to display currency with a dot so for instance it should be

1.234,56 kr.

At the moment I'm using

pattern = "#,##0.00 ¤";
new DecimalFormat(pattern);

This doesn't work as the Danish krone is for some reason defined there as kr instead of officially recognized kr.

I've looked for a way to escape these characters using Unicode value that I would add to pattern but that doesn't work. In the official documentation here I don't see a way to do it either.

TLDR: I want to add full stop after currency symbol. So at the moment I have it like this kr , what I want to get is kr. .

Answer 1

If you just want the dot after the currency symbol you can set a custom currency symbol. Here I did it using euros (note that instead of "€." you can put my_symbol.getCurrencySymbol()+"." if you want it for all currency and not just one):

    DecimalFormatSymbols my_symbol = new DecimalFormatSymbols();
    my_symbol.setCurrencySymbol("€.");
    String pattern = "###,###.###¤";
    DecimalFormat decimalFormat1 = new DecimalFormat(pattern, my_symbol);

    String format = decimalFormat1.format(987654321.321);
    System.out.println(format);

This gives

987.654.321,321€.

Answer 2

The output of currency values depends on the respective country setting. If you want to explicitly have a decimal point as in your case, you have to set a corresponding locale for the Numberformat . Eg English for a point.

For Example:

public String FormatWithPoint(double yourValue){
    NumberFormat nf = NumberFormat.getNumberInstance(Locale.ENGLISH);
    nf.setGroupingUsed(false);
    return nf.format(yourValue);
}

Edit: If you need more control, you can also do the following:

public String FormatCurreny(double yourValue){
    NumberFormat nf = NumberFormat.getCurrencyInstance();
    nf.setGroupingUsed(false);
    DecimalFormatSymbols dfs = new DecimalFormatSymbols();
    dfs.setCurrencySymbol("kr.");
    dfs.setMonetaryDecimalSeparator('.');
    ((DecimalFormat) nf).setDecimalFormatSymbols(dfs);
    return nf.format(yourValue);
}