Method iterator

enums/PostOffice.java:52–65

()

    return new Iterable<Mail>() {
      int n = count;
      @Override public Iterator<Mail> iterator() {
        return new Iterator<Mail>() {
          @Override public boolean hasNext() {
            return n-- > 0;
          }
          @Override public Mail next() {
            return randomMail();
          }
          @Override
          public void remove() { // Not implemented
            throw new UnsupportedOperationException();
          }
        };
      }
    };
  }
}