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what is the difference between set and map in java?


Set

A set represents a group of elements which can’t contain a duplicate element. It extends the collection interface.
Note: Set interface contains only methods inherited from Collection interface and adds the restriction that can’t contain a duplicate element.

Map

A map represents an object with key value pair. A map cannot contain duplicate keys and one key can map to at most one value.

Set contains values only whereas Map contains key and values both.

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