How can elements in a HashSet be ordered?

HashSet in Java does not guarantee the order of elements because it is based on a hash table. To order elements from a HashSet, you can:

1. Convert the HashSet to a List, and then sort it using Collections.sort() or the Stream API.

HashSet<String> set = new HashSet<>();
set.add("banana");
set.add("apple");
set.add("orange");

List<String> list = new ArrayList<>(set);
Collections.sort(list);

for (String fruit : list) {
    System.out.println(fruit);
}

2. Use a TreeSet, which stores elements in sorted order if order is important from the start.

TreeSet<String> sortedSet = new TreeSet<>(set);
for (String fruit : sortedSet) {
    System.out.println(fruit);
}

Thus, ordering is achieved either by sorting after extraction or by using a data structure that maintains order.