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What is the default clone of HashSet?

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What is the default clone of HashSet?

(a) Deep clone

(b) Shallow clone

(c) Plain clone

(d) Hollow clone

I have been asked this question in an international level competition.

The question is from Data Structures-Set topic in division java.util – The Collections Framework of Java

1 Answer

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The correct option is (b) Shallow clone

Explanation: Default clone() method uses shallow copy. The internal elements are not cloned. A shallow copy only copies the reference object.

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