Object-oriented programming · interview question
In an e-commerce application, how would you ensure that a customer's address list cannot be modified after initialization?
Multiple choiceHardchapter-3-curatedpremiumoopdefensive-copying
Answer and explanation
Correct answer
D. Initialize it as an unmodifiable list
Why
To ensure that a customer's address list remains unchanged after initialization, you can initialize it as an unmodifiable list using Collections.unmodifiableList or List.copyOf. This prevents any external code from making changes to the list.
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