code: public String nextString()throws NoSuchElementException, UResourceTypeMismatchException{
          if(index<size){
              return bundle.getString(index++);
          }  
          throw new NoSuchElementException();
      }
docs: Returns the next String of this iterator if this iterator object has at least one more element to provide
  @return the UResourceBundle object
  @throws NoSuchElementException If there does not exist such an element.
  @throws UResourceTypeMismatchException If resource has a type mismatch.