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| Core java - Interview Questions and Answers for 'Td bank' - 1 question(s) found - Order By Newest | ||||
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| Ans. Since String is immutable, its hashcode is cached at the time of creation and it doesnt 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. | ||||