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Java: In Java, which comparison about java.time API is accurate?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

In Java, which comparison about java.time API is accurate?

  1. Instant is a machine timestamp, LocalDate is a human calendar date without timezone, and ZonedDateTime includes timezone rules.
  2. There is no practical difference in behavior, performance, or API design when java.time API is involved.
  3. The oldest option related to java.time API is always the right production choice regardless of context.
  4. Differences around java.time API 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: A. Instant is a machine timestamp, LocalDate is a human calendar date without timezone, and ZonedDateTime includes timezone rules.

Instant is a machine timestamp, LocalDate is a human calendar date without timezone, and ZonedDateTime includes timezone rules. This is the comparison that usually separates memorization from understanding.

Track: Java