Core Java · interview question
Which wrapper class is NOT immutable in Java?
Multiple choiceEasychapter-7-curatedpremiumcore-javawrapper-types-and-autoboxing
Answer and explanation
Correct answer
C. None, all are immutable
Why
All wrapper classes in Java are immutable, meaning their values cannot be changed once they are created.
Test yourself on Core Java
A free test with instant, explained results. No account needed.
More Core Java questions
- What happens if a class implements two interfaces that have methods with the same signature?
- Given the code snippet below, what will be the result of the comparison using '=='?
- Which of the following variable names is best for storing the total amount in a shopping cart?
- When does a local variable declared inside a method stop existing?
- Which of the following is a checked exception?
- Why might you choose 'int' over 'long' for storing the number of items in a small store's inventory?