fromString() method that doesn't convert properly

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I have a method which converts string to a MeterNumber. The code is as follows.

public static MeterNumber fromString(String number) {
      MeterNumber mn = new MeterNumber(false);
      int i = 0, // position in number
          n = 0, // number of digits
          len = number.length();
      boolean valid = true;
      while (valid && i < len) {
         char c = number.charAt(i);
         i = i + 1;
         if (n < 9 && Character.isDigit(c)) {
            mn.digits[n] = c - '0';
            n = n + 1;
         } else if (Character.isWhitespace(c)) { 
            // skip spaces
         } else {
            valid = false;
         }
      }
      int cs = mn.checksum();
      if (valid && i == len && n == 9 &&
          cs / 10 == mn.digits[7] && cs % 10 == mn.digits[8]) {
         return mn;
      } else { 
         return null;
      }
   }

It's suppose to read an input like this:

531 481 889 O 788.5
652 364 795 P 2442.7

It will work fine if I just provide:

531 481 889
652 364 795

However it returns null if my input is in this format:

531 481 889 O 788.5
652 364 795 P 2442.7

Can you please help me see the problem. Why is the Char and double at the end of the line interfering?

Thanks in advance.

asked 50 secs ago

lolian

5

fromString() method that doesn't convert properly