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

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