hashmap in A Sentence

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    JavaScript Hashmap Equivalent.

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    2

    What happens when a duplicate key is put into a Hashmap?

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    (Hashmap allows null values as key and value whereas Hashtable doesnt allow).

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    4

    (Hashmap allows null values as key and value whereas Hashtable doesn't allow nulls).

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    5

    The Hashmap class is roughly equivalent to Hashtable, except that it is unsynchronized and permits nulls.

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