java add commas to numbers
String number = "1000500000.574"; double amount = Double.parseDouble(number); DecimalFormat formatter = new DecimalFormat("#,###.00"); // the zeroes after the point are the number of digits shown after the period // you can also switch point and commas and get for example 1.002,45 System.out.println(formatter.format(amount)); // this prints 1,000,500,000.57