How to use Java's DecimalFormat for “smart” currency formatting?

Question

I\'d like to use Java\'s DecimalFormat to format doubles like so:

#1 - 100 -> $100
#2 - 100.5 -> $100.50
#3 - 100.41 -> $100.41

Th

Answer 1

Try using

DecimalFormat.setMinimumFractionDigits(2);
DecimalFormat.setMaximumFractionDigits(2);

Answer 2

I know its too late. However following worked for me :

DecimalFormatSymbols otherSymbols = new DecimalFormatSymbols(Locale.UK);
new DecimalFormat("\u00A4#######0.00",otherSymbols).format(totalSale);

 \u00A4 : acts as a placeholder for currency symbol
 #######0.00 : acts as a placeholder pattern for actual number with 2 decimal 
 places precision.   

Hope this helps whoever reads this in future :)

Answer 3

You can use the following format:

DecimalFormat dformat = new DecimalFormat("$#.##");

Answer 4

You can try by using two different DecimalFormat objects based on the condition as follows:

double d=100;
double d2=100.5;
double d3=100.41;

DecimalFormat df=new DecimalFormat("'$'0.00");

if(d%1==0){ // this is to check a whole number
    DecimalFormat df2=new DecimalFormat("'$'");
    System.out.println(df2.format(d));
}

System.out.println(df.format(d2));
System.out.println(df.format(d3));

Output:-
$100
$100.50
$100.41

Answer 5

Try

new DecimalFormat("'$'0.00");

Edit:

I Tried

DecimalFormat d = new DecimalFormat("'$'0.00");

        System.out.println(d.format(100));
        System.out.println(d.format(100.5));
        System.out.println(d.format(100.41));

and got

$100.00
$100.50
$100.41

Answer 6

Does it have to use DecimalFormat?

If not, it looks like the following should work:

String currencyString = NumberFormat.getCurrencyInstance().format(currencyNumber);
//Handle the weird exception of formatting whole dollar amounts with no decimal
currencyString = currencyString.replaceAll("\\.00", "");