Additional Notes
Why avoid unrestricted setters in Java?
Track: Java
Topic: OOP
Focus: Controlled Mutation
Java: Controlled Mutation
Answer
They can lead to invalid object states. Frame the concept in practical terms so you can explain it during interview discussion.
Unrestricted setters allow any value to be assigned to a field, potentially leading to invalid states. For instance, if a Product class allows setting the stock to a negative number via a setter, it could cause issues in inventory management. Instead, methods should validate inputs to maintain consistent and valid states. Consider a `setStock(int stock)` method that checks if the stock is non-negative before updating.
Unrestricted setters allow any value to be assigned to a field, potentially leading to invalid states. For instance, if a Product class allows setting the stock to a negative number via a setter, it could cause issues in inventory management. Instead, methods should validate inputs to maintain consistent and valid states. Consider a `setStock(int stock)` method that checks if the stock is non-negative before updating.
Topics: Controlled Mutation Java OOP