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Java — Which interface provides capability to store objects using key-value pairs?

Difficulty: Easy

java.util.Map
java.util.Set
java.util.List
java.util.Collection

Correct Answer: java.util.Map

Explanation:

Introduction / Context:
This tests knowledge of the Map interface in the Java Collections Framework.

Concept / Approach:
Map defines methods to store key-value pairs, where keys are unique and values can be retrieved by keys.

Why Other Options Are Wrong:

Set → stores unique elements only, no key-value.
List → ordered collection of elements, allows duplicates.
Collection → root interface, but no key-value mapping.

Final Answer:
java.util.Map

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