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Thread: Hash Code

  1. #1
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    Default Hash Code

    anyone please tell me that what is mean by hash code??


  2. #2
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    Default Re: Hash Code

    Hashcode is used for bucketing in Hash implementations like HashMap, HashTable, HashSet etc. The value received from hashcode() is used as bucket number for storing elements of the set/map. this bucket number is the address of the element inside the set/map. when you do contains() then it will take the hashcode of the element, then look for the bucket where hashcode points to... if more than 1 element is found in the same bucket (multiple objects can have the same hashcode) then it uses the equals() method to evaluate if object are equal, and then decide if contain() is true or false, or decide if element could be added in the set or not.

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    Default Re: Hash Code

    Recommended reading:
    Object (Java Platform SE 7 )
    Please make an effort to research your questions using books or online resources before posting them. The effort of the unpaid volunteers of this forum are much better spent answering any questions that you may have after you've done the research.

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