public static void main(String[] args) {
Collection<String> c = new ArrayList<>();
c.add("A");
c.add("B");
c.add("C");
c.add("D");
c.add("E");
c.add("F");
List list = (List)c;
ListIterator li = list.listIterator();
while(li.hasNext()) {
System.out.println(li.next());
}
}
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