Object-oriented programming · interview question
When should you use a constructor in a Java class?
Multiple choiceMediumchapter-2-curatedpremiumoopobject-references
Answer and explanation
Correct answer
A. To initialize an object's state when it is created.
Why
Constructors are used in Java to initialize the state of an object when it is created. They set up initial values for the object's fields and are invoked automatically when a new object is instantiated.
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…