Additional Notes
Why put behavior like `lineTotal()` on `CartItem`?
Track: Java
Topic: OOP
Focus: Instance Methods
Java: Instance Methods
Answer
Because the object that owns the relevant state can answer the question most cleanly.
When methods live near the data they depend on, the model becomes easier to understand. That is one of the first real advantages of object-oriented design over a long procedural script.
When methods live near the data they depend on, the model becomes easier to understand. That is one of the first real advantages of object-oriented design over a long procedural script.
Topics: Instance Methods Java OOP