How to add element in List while iterating in java?

Question

Say I have a List like:

List list = new ArrayList<>();
list.add(\"a\");
list.add(\"h\");
list.add(\"f\");
list.add(\"s\");

Answer 1

You could iterate on a copy (clone) of your original list:

List copy = new ArrayList(list);
for (String s : copy) {
    // And if you have to add an element to the list, add it to the original one:
    list.add("some element");
}

Note that it is not even possible to add a new element to a list while iterating on it, because it will result in a ConcurrentModificationException.