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Java: In Java, which comparison about Parallel Streams is accurate?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

In Java, which comparison about Parallel Streams is accurate?

  1. There is no practical difference in behavior, performance, or API design when Parallel Streams is involved.
  2. The oldest option related to Parallel Streams is always the right production choice regardless of context.
  3. Differences around Parallel Streams are mostly cosmetic, so correctness and maintainability do not change.
  4. They can help on large CPU-bound workloads with independent operations, but they often hurt small or blocking workloads.

Hint

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

Answer and rationale

Correct answer: D. They can help on large CPU-bound workloads with independent operations, but they often hurt small or blocking workloads.

They can help on large CPU-bound workloads with independent operations, but they often hurt small or blocking workloads. This is the comparison that usually separates memorization from understanding.

Track: Java