Object-oriented programming · interview question
How can a 'Customer' object maintain a list of 'Cart' objects and ensure only one cart is active at a time?
Multiple choiceMediumchapter-2-curatedpremiumoopobject-references
Answer and explanation
Correct answer
B. Use a method to deactivate all other carts when one is activated.
Why
To ensure only one cart is active at a time, a method can be implemented in the 'Customer' class to deactivate all other carts whenever a new one is activated. This ensures a single point of control for cart activation.
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…