Reading in a space filled file

Question

I am reading in a file which is in byte format and each record is 50 chars wide and space-filled. If an element is not present in the file, then it is just space filled.
Example input.prn file:
Bob ����� Smith�����12 North Rd�����Denver�����CO�����USA�����12435
John �� Williams�����123 State St�����New York�����NY����������12435
Notice in the second record, that John Williams does not have a country. It is just space-filled (50 chars).
So I need to read in this file, and send it to a constructor in this format:
Bob,Smith,12 North Rd,Denver,CO,USA,12435
John,Williams,123 State St,New York,NY,,12435
in the second record where there was no country, a "," needs to be in it's place.
       BufferedReader br = new BufferedReader(new FileReader("input.prn"));
       String line = " ";
       // the delim needs to be space filled somehow
           while((line = br.readLine()) != null)
                StringTokenizer st = new StringTokenizer(line,delim);
           }I'm not sure how to approach this problem. Any help would be greatly appreciated.
thank you

Answer 1

            while ((len = br.read(data, 0, data.length)) != -1 ) {
                //You do now have len characters available in the data.
                 line = new String(data, 0, data.length);
                 String firstName = line.substring(0,10) + ",";
                 String lastName = line.substring(10,27) + ",";
                 String startDate = line.substring(27,35) + ",";
                 String address1 = line.substring(35,45) + ",";
                 String address2 = line.substring(45,55) + ",";
                 String city = line.substring(55,65) + ",";
                 String state = line.substring(65,67) + ",";
                 String country = line.substring(67,70) + ",";
                 String zip = line.substring(70,80);
                 String record = firstName+lastName+startDate+address1+address2+city
                                          +state+country+zip;
                                              System.out.println(record.toString());
                                  }If I add the + "," onto the String values to output comma-seperated values, the results for the second record appear incorrectly as below:
Bob ,Smith ,20051018,12 North Rd ,Apt 1 ,Miami ,FL,usa,87782
Tom
Jon,es 200,307308 S,tate St Apt, 12 Boi,se IDu,sa,112,35
Tom
The output for the first record of Bob Smith is absolutely correct, but the record for Tom Jones is not. All of the commas are misplaced.