Explain the both hashset and treeset, JAVA Programming

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Explain the both HashSet and TreeSet?

HashSet is an unordered, unsorted Set.

It's a Collection set which restrict duplicate elements and also repositioning of elements.

It implements Set interface and extends AbstractSet.

Uses hash code of object being inserted.

TreeSet is a Set implemented when we want elements in a sorted order.

Sorting of element is done according to natural order of elements or by help of comparator provided at creation time.

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