Best way to parseDouble with comma as decimal separator?

Question

Following is resulting in an Exception:

String p=\"1,234\";
Double d=Double.valueOf(p); 
System.out.println(d);

Is there a bet

Answer 1

As E-Riz points out, NumberFormat.parse(String) parse "1,23abc" as 1.23. To take the entire input we can use:

public double parseDecimal(String input) throws ParseException{
  NumberFormat numberFormat = NumberFormat.getNumberInstance(Locale.getDefault());
  ParsePosition parsePosition = new ParsePosition(0);
  Number number = numberFormat.parse(input, parsePosition);

  if(parsePosition.getIndex() != input.length()){
    throw new ParseException("Invalid input", parsePosition.getIndex());
  }

  return number.doubleValue();
}