Additional Notes
What role do invariants play in class design?
Track: Java
Topic: OOP
Focus: Controlled Mutation
Java: Controlled Mutation
Answer
Invariants ensure the class state remains valid.
An invariant is a condition that must always hold true for an object. In a class, invariants help maintain valid states across mutations. For instance, in a `BankAccount` class, an invariant might be that the `balance` must never be negative. By enforcing this through methods, you ensure the integrity of the object's state.
An invariant is a condition that must always hold true for an object. In a class, invariants help maintain valid states across mutations. For instance, in a `BankAccount` class, an invariant might be that the `balance` must never be negative. By enforcing this through methods, you ensure the integrity of the object's state.
Topics: Controlled Mutation Java OOP