Q. Which of the following is thread-safe?

  • (A) ArrayList
  • (B) HashMap
  • (C) Vector
  • (D) HashSet
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✅ Correct Answer: (C) Vector
Explanation: Vector is synchronized and thread-safe.

Published by Roshan ⭐ 3.43K Points at 23-Apr-2026 06:00 am in JAVA

Explanation by: Roshan
Vector is synchronized and thread-safe.

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