How can I change the format of the numbers from 1,9 (one point nine) to 1.9)?

Mino32

I want to change the format of the numbers with decimals because it is confusing when i have thousands (1,900) and decimals.

GoToLoop

Generally a mere "1.900,35".replace(',', '.'); would suffice:
http://docs.oracle.com/javase/6/docs/api/java/lang/String.html#replace(char, char)

But when it contains both ',' & '.', we're gonna need a more sophisticated "swap" util function:

// forum.processing.org/two/discussion/11106/
// how-can-i-change-the-format-of-the-numbers-from-1-9-one-point-nine-to-1-9

static final String commaPointSwap(CharSequence s) {
  StringBuilder sb = new StringBuilder(s);

  for (int i = sb.length(); i-- != 0; ) {
    char ch = sb.charAt(i);
    if      (ch == ',')  sb.setCharAt(i, '.');
    else if (ch == '.')  sb.setCharAt(i, ',');
  }

  return sb.toString();
}

void setup() {
  println( commaPointSwap("1.900,35") );
  exit();
}

GoToLoop

Alternative version using toCharArray() in place of a StringBuilder: B-)

http://docs.oracle.com/javase/6/docs/api/java/lang/String.html#toCharArray()
http://docs.oracle.com/javase/6/docs/api/java/lang/StringBuilder.html

// forum.processing.org/two/discussion/11106/
// how-can-i-change-the-format-of-the-numbers-from-1-9-one-point-nine-to-1-9

static final String commaPointSwap(String s) {
  char[] chars = s.toCharArray();

  for (int i = chars.length; i-- != 0; ) {
    char ch = chars[i];
    if      (ch == ',')  chars[i] = '.';
    else if (ch == '.')  chars[i] = ',';
  }

  return new String(chars);
}

void setup() {
  println( commaPointSwap("1.900,35") );
  exit();
}

Mino32

thanks!!!! :D

koogs

that is probably not the right way to do things.

better would be to use java's NumberFormat and supply either a Locale that suits your purposes or a custom format.

http://docs.oracle.com/javase/7/docs/api/java/text/NumberFormat.html

https://docs.oracle.com/javase/tutorial/java/data/numberformat.html