What is your experience with iterators in projects?

In Java projects, iterators are often used for sequential traversal of collections without revealing their internal structure. For example, when working with ArrayList or HashSet, an iterator allows you to go through the elements using the hasNext() and next() methods.

Example of using an iterator:

List<String> list = new ArrayList<>();
list.add("apple");
list.add("banana");
list.add("cherry");

Iterator<String> iterator = list.iterator();
while (iterator.hasNext()) {
    String fruit = iterator.next();
    System.out.println(fruit);
}

In my projects, I used iterators for safe removal of elements during collection traversal, as well as for implementing custom collections with iteration support, which improved code readability and maintainability.