Why doesn't java.util.Set have get(int index)?

Question

I\'m sure there\'s a good reason, but could someone please explain why the java.util.Set interface lacks get(int Index), or any similar get()

Answer 1

That is because Set only guarantees uniqueness, but says nothing about the optimal access or usage patterns. Ie, a Set can be a List or a Map, each of which have very different retrieval characteristics.