Collections: Iterator versus ListIterator

var list = new ArrayList<>(List.of("a", "b", "c"));

ListIterator<String> it = list.listIterator();
while (it.hasNext()) {
    int i = it.nextIndex();
    String v = it.next();
    if (v.equals("b")) it.set("B");
    System.out.println("forward  " + i + " -> " + v);
}
while (it.hasPrevious()) {
    System.out.println("backward " + it.previousIndex() + " -> " + it.previous());
}
System.out.println("final list = " + list);

forward  0 -> a
forward  1 -> b
forward  2 -> c
backward 2 -> c
backward 1 -> B
backward 0 -> a
final list = [a, B, c]