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Java: In Java, which comparison about List, Set, and Map is accurate?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

In Java, which comparison about List, Set, and Map is accurate?

  1. There is no practical difference in behavior, performance, or API design when List, Set, and Map is involved.
  2. Choose a collection by the behavior you need first, and then by the performance tradeoff that behavior implies.
  3. The oldest option related to List, Set, and Map is always the right production choice regardless of context.
  4. Differences around List, Set, and Map are mostly cosmetic, so correctness and maintainability do not change.

Hint

Focus on the behavior or tradeoff, not just the keyword.

Answer and rationale

Correct answer: B. Choose a collection by the behavior you need first, and then by the performance tradeoff that behavior implies.

Choose a collection by the behavior you need first, and then by the performance tradeoff that behavior implies. This is the comparison that usually separates memorization from understanding.

Track: Java