Object-oriented programming · interview question
What happens if you assign a 'Product' object reference in a 'Customer' object, and then set the 'Product' to null?
Multiple choiceMediumchapter-2-curatedpremiumoopobject-references
Answer and explanation
Correct answer
B. The reference in Customer remains valid unless explicitly set to null.
Why
Setting a reference to null only affects that specific reference. Other references to the object remain valid.
Test yourself on Object-oriented programming
A free test with instant, explained results. No account needed.
More Object-oriented programming questions
- In a typical e-commerce application, how should a CartItem object access the price of a Product?
- What design principle is violated if a Cart class directly manipulates a Product's price?
- Why might CartItem hold a Product reference instead of copying every product field into loose variables?
- In the context of e-commerce, which class is most likely to contain a method called calculateTotalPrice()?
- What access modifier should be used for fields to adhere to encapsulation principles?
- How would you explain a key reason to use encapsulation when designing an object with multiple responsibilities in an…