HashSet vs LinkedHashSet vs TreeSet in Java | Java Collections in English (Java Tutorial)

******************** Comparison among HashSet, LinkedHashSet, and TreeSet in Java:
Java HashSet:
It doesn't maintain any order.
Retrieval is fast.

Java LinkedHashSet:
It maintains insertion order.
Retrieval is medium.

Java TreeSet:
It maintains sorted order. Default sorting is ascending order.
Retrieval is slow.

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