Quick study sessions to strengthen memory and retain key concepts.
Why use private fields instead of public fields?
Private fields protect the internal state by restricting direct access. Using private fields ensures that an object's data…
View Card →What is encapsulation in Java?
Encapsulation is the bundling of data and methods that operate on the data within one unit. Encapsulation is…
View Card →How can you safely allow access to a list of orders in a system?
By returning a copy or an unmodifiable view. To prevent external modifications, return a copy of the list…
View Card →Why does encapsulation in Java matter in practice?
To protect the internal state of an object. Encapsulation hides the internal details of an object and only…
View Card →How can encapsulation enhance a trustworthy store model?
By controlling data access and modification. Encapsulation ensures that critical operations, like price adjustments or stock updates, are…
View Card →How does encapsulation help maintain invariants in a class?
By ensuring all changes are made through controlled methods. Encapsulation helps maintain class invariants by restricting how fields…
View Card →Why avoid making fields public in Java classes?
To prevent unauthorized access and maintain control. Public fields can be accessed and modified directly from outside the…
View Card →Why might you use a method instead of a setter to update a field?
To enforce validation or additional logic. Using a method instead of a simple setter allows you to include…
View Card →What role do getters play in encapsulation?
They provide controlled access to private fields. Getters allow you to access private fields without exposing them directly.…
View Card →How does encapsulation enforce safe object design?
By restricting direct access and defining controlled modifications. Encapsulation allows a class to hide its internal data and…
View Card →