Collections · interview question
In a HashMap, what happens if you put() a new value for an existing key?
Multiple choiceMediumchapter-4-curatedpremiumcollectionsmap-interface-and-hashmap
Answer and explanation
Correct answer
D. The old value is replaced by the new value.
Why
When you put() a new value for an existing key in a HashMap, the old value is replaced by the new value. The HashMap is updated to reflect the new value associated with that key.
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