Infinite loop while using iterator

Question

Set key1 = map.keySet();
Iterator it1 = key1.iterator();
int cnt=0;
while (it1.hasNext()) {
  cnt++;
}

What are the chances that this code will result

Answer 1

Yes. Until you don't call it1.next() it will never move on to next item. Beause it1.next() will return the object which you have added in the list/set.