Q. Which class is immutable?

  • (A) String
  • (B) StringBuilder
  • (C) ArrayList
  • (D) HashMap
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✅ Correct Answer: (A) String
Explanation: String objects are immutable in Java.

Published by Roshan ⭐ 3.43K Points at 23-Apr-2026 06:01 am in JAVA

Explanation by: Roshan
String objects are immutable in Java.

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