Junior — Middle

How are elements retrieved from a Set collection?

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Answer from AI

In Java, the Set collection does not guarantee the order of elements and does not support access by index. To retrieve elements from a Set, an iterator or a for-each loop is usually used. For example:

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

for (String item : set) {
    System.out.println(item);
}

You can also obtain an iterator and manually iterate through the elements:

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

Thus, access to elements occurs through iteration, not by index.

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