Why does constructors in Java matter in this design?
What's a key advantage of using getters and setters?
What are the implications of not using instance methods?
Why check stock in the Product class?
How can method placement affect object interaction?
When does behavior belong on the object itself?
Why avoid direct field access in objects?
How do you define an instance method in Java?
Why are instance methods important for object state interactions?
Why use instance methods to modify object state?