how hasnext() works in collection in java

Question

program:

public class SortedSet1 {

  public static void main(String[] args) {  

    List ac= new ArrayList();

    c.add(ac);
    ac.add(0,\"hai\");
    ac.add         


        

Answer 1

the point is ac.get(k) doesn't consume any element of the iterator at the contrary of it.next()