迭代器简易用法Iterator

public static void main(String[] args) {
        List<String> list = Arrays.asList("111","222","111","333","4444");
        Collections.reverse(list);
        System.out.println(list);
        Iterator<String> iterator = list.iterator();
        while (iterator.hasNext()) {
            String str = iterator.next();
            System.out.println(str);
        }
    }