Q. What will be the output?

Code: 
String s = "Java";
s.concat(" World");
System.out.println(s);
  • (A) Java
  • (B) Java World
  • (C) Compilation Error
  • (D) Runtime Error
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✅ Correct Answer: (A) Java
Explanation: Strings are immutable. concat() returns a new string but does not modify the original.

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

Explanation by: Roshan
Strings are immutable. concat() returns a new string but does not modify the original.

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