Object-oriented programming · interview question
Consider a 'Product' class in an e-commerce application. What is a potential risk if its price field is public?
Multiple choiceMediumchapter-3-curatedpremiumoopaccess-modifiers-and-visibility
Answer and explanation
Correct answer
D. The price can be changed without validation.
Why
If the price field is public, it can be accessed and modified directly without any validation. This could lead to incorrect or inconsistent state within the application.
Test yourself on Object-oriented programming
A free test with instant, explained results. No account needed.
More Object-oriented programming questions
- What happens if a subclass does not implement all abstract methods from its abstract superclass?
- What does the 'this' keyword refer to within an instance method of a class?
- Which Java keyword would you use to declare an abstract class in Java?
- Which statement correctly creates an instance of the 'Product' class?
- How does using interfaces in Java promote flexibility in application design?
- In Java, why might composition be preferred over inheritance when designing a class to calculate discounts for…