Object-oriented programming · interview question
How would you explain an effective way to ensure immutability in a 'Customer' class in a Java application in an interview?
Multiple choiceHardchapter-3-curatedpremiumoopaccess-modifiers-and-visibility
Answer and explanation
Correct answer
C. Use final for fields and avoid setters.
Why
To ensure immutability, declare fields as final to prevent reassignment and avoid providing setters. This ensures that once the object is constructed, its state cannot be altered.
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