Engineering Interviews · interview question
How can you ensure a class is immutable in Java?
Multiple choiceMediumchapter-20-curatedpremiumengineering-interviewscode-review-spotting-bugs
Answer and explanation
Correct answer
A. Make all fields final and private, and provide no setters
Why
To make a class immutable, all fields should be declared final and private with no setters provided. This ensures the state of an object cannot change once it is constructed.
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