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Java: In Java, which comparison about String Immutability is accurate?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

In Java, which comparison about String Immutability is accurate?

  1. There is no practical difference in behavior, performance, or API design when String Immutability is involved.
  2. The oldest option related to String Immutability is always the right production choice regardless of context.
  3. String is for stable text values, while StringBuilder is for repeated mutable text assembly.
  4. Differences around String Immutability 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. String is for stable text values, while StringBuilder is for repeated mutable text assembly.

String is for stable text values, while StringBuilder is for repeated mutable text assembly. This is the comparison that usually separates memorization from understanding.

Track: Java