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Java: In Java, which comparison about Immutable Class Design is accurate?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

In Java, which comparison about Immutable Class Design is accurate?

  1. There is no practical difference in behavior, performance, or API design when Immutable Class Design is involved.
  2. The oldest option related to Immutable Class Design is always the right production choice regardless of context.
  3. Immutability simplifies reasoning and sharing compared with mutable objects that rely on discipline and defensive conventions.
  4. Differences around Immutable Class Design 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: C. Immutability simplifies reasoning and sharing compared with mutable objects that rely on discipline and defensive conventions.

Immutability simplifies reasoning and sharing compared with mutable objects that rely on discipline and defensive conventions. This is the comparison that usually separates memorization from understanding.

Track: Java