A mutator (setter) method has no control over the way that a class's data attributes are modified.

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BlackTom AI · Accepted Answer

Question restatement: A mutator (setter) method has no control over the way that a class's data attributes are modified.
Option 1: True. This is not accurate because mutator methods are specifically designed to control how a field is changed, often enforcing validation, invariants, or business rules before allowing assignment. Ignoring these controls would defeat the purpose of a mutator.
Option 2: False. The assertion in Option 1 is incorrect precisely because mutators do provide the controlled interface for modifying internal state, rather than leaving attributes modifiable without checks. When a setter is implemented, you typically include validation such as range checks, null checks, or consistency requirements to maintain object integrity.
Additional context: The alternative viewpoint might claim that data attributes could be modified directly or that setters have no influence, but common object-oriented practice uses mutators to encapsulate and regulate state changes. Direct access to fields bypasses any validation or logic embedded in the setter, which is a common source of bugs. Therefore, the claim that a mutator has no control over modifications ignores the core role of encapsulation and controlled access.
In summary, the idea that setters have no control over attribute modification contradicts the purpose of encapsulation, since setters are the mechanism by which a class enforces rules when its data changes. The observed behavior aligns with setters providing controlled modification rather than being inert.

2261 CS 0012 SEC1010 Final Quiz

A mutator (setter) method has no control over the way that a class's data attributes are modified.

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