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Editorial Team
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Asked: 2026-06-03T21:12:59+00:00

One of the advantages of String immutability is hashcode caching for faster access. In

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One of the advantages of String immutability is hashcode caching for faster access.

  • In this case how cache is handled for string which has same hashcode?
  • Does it really improve the performance in this case?
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  1. Editorial Team

    In this case how cache is handled for string which has same hashcode?

    I don’t understand the first part of your question. Cache is handled for all Strings the same, whether hashcodes are the same or not (since two different Strings can theoretically have the same hashCode, and so if hashCodes are equal, it doesn’t mean that the Strings are equal). But if the same String object is used, the hashCode does not have to be recalculated since it is cached.

    Does it really improve the performance?

    Unequivocally YES

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