Safely Delete collection elements in a loop

Deleting a collection element in a loop can occur when an array is out of bounds, such as:

List<Integer> list = new ArrayList<>();list.add(1);list.add(2);list.add(3);for (Integer item : list) {    System.out.println(item);    if (item == 1) {        list.remove(item);    }}

The correct approach is to use iterators:

List<Integer> list = new ArrayList<>();list.add(1);list.add(2);list.add(3);Iterator<Integer> iterator = list.iterator();while (iterator.hasNext()) {    Integer i = iterator.next();    System.out.println(i);    if (i == 1)        iterator.remove();}for (Integer i : list) {    System.out.println(i);}

If it is ArrayList, it can be deleted in reverse.

Safely Delete collection elements in a loop