Your question is Explain the internal mechanics of a Map in Java. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain the internal mechanics of a Map in Java?
Focus on the common HashMap implementation and explain how keys are hashed, how buckets and collisions are handled, how lookup uses equals, and what happens when the table resizes. Include the role of hashCode and equals, the expected time complexity, and how HashMap differs from ConcurrentHashMap for concurrent access.
Scope: Java 8 and later collection implementations. Distinguish the Map interface from implementation-specific behavior.