why string is popular hashmap key in java 3f
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showing results for - "why string is popular hashmap key in java 3f"
Matilda
23 Jul 2018
1Since String is immutable, its hashcode is cached at the time of creation and it doesn't need to be calculated again. This makes it a great candidate for key in a Map and its processing is fast than other HashMap key objects. This is why String is mostly used Object as HashMap keys.similar questions
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