Парсинг txt файла через tokenizer

Полный код

public class Main {
    public static void main(String[] args) throws TransformerException, IOException {
        StringBuilder string = new StringBuilder();
        String file = "text.txt";
        FileInputStream fstream = new FileInputStream(file);
        String line;
        String delimiter = " ";

      StringTokenizer tokenizer;
      BufferedReader input = null;
      List<Worker> workers = new ArrayList<>();
      String fileName = "list.xml";
      try{
        input = new BufferedReader(new InputStreamReader(fstream));
        while ((line = input.readLine()) !=null){
          tokenizer = new StringTokenizer(line,delimiter);
          while (tokenizer.hasMoreElements()){
            String id = tokenizer.nextToken();
            String name = tokenizer.nextToken();
            String surname = tokenizer.nextToken();
            String dateBirthday = tokenizer.nextToken();
            String dateStartWorking = tokenizer.nextToken();
            System.out.println(id);
            //Добавлю элементы в список
            workers.add(new Worker(id,name,surname,dateBirthday,dateStartWorking));

          }
           writeToXML(workers,fileName);
        }
      }catch (FileNotFoundException e) {
        System.out.println("Unable to open file " + fstream);
      } catch (IOException e) {
        System.out.println("Unable to read from file " + fstream);
      }finally {
        try {
          if (input != null)
            input.close();
        } catch (IOException e) {
          System.out.println("Unable to close file " + fstream);
        }
    }
   }
   private static void writeToXML(List<Worker> workers, String fileName) throws IOException{
     Document doc = new Document();
     doc.setRootElement( new Element("Person", Namespace.getNamespace("person")));
     for (Worker worker : workers){
       Element workerElement = new Element("Person", Namespace.getNamespace("person"));
       workerElement.setAttribute("id", String.valueOf(worker.getId()));
       workerElement.addContent(new Element("name").setText(worker.getName()));
       workerElement.addContent(new Element("surname").setText(worker.getSurname()));
       workerElement.addContent(new Element("DateBirthday").setText(worker.getDateBirthday()));
       workerElement.addContent(new Element("DateStartWorking").setText(worker.getDateStartWorking()));
       doc.getRootElement().addContent(workerElement);
     }
     XMLOutputter xmlWriter = new XMLOutputter(Format.getPrettyFormat());
     xmlWriter.output(doc, new FileOutputStream(fileName));
   }
}