Iterator 挑动的NoSuchElementException

Iterator 引发的NoSuchElementException

  while (it.hasNext()) {
            String t = it.next().toString();
            if(!links.contains(t)){
              System.out.println("adfadfad: " + t);
              System.out.println("SIZE   : " + links.size());
              links.add(t);
            }
          }

 

发现报NoSuchElementException异常,原来用了两次it.next()方法,小心哪。。。