Question 1

Which of the following is not true about declaring references to objects of other classes inside a class definition?&#10;A) These references can be initialized inside the class definition.&#10;B) Each reference only requires enough memory to store the memory address of the object it references.&#10;C) If the class names for the other objects are used only to declare references, a forward declaration can be used to tell the compiler that the class name represents a type.&#10;D) These references can represent directional associations from a UML class diagram.

Accepted Answer

References to objects of other classes cannot be initialized inside the class definition; they are typically initialized in the constructor or other member functions.

Question 2

Which attribute or behavior would we not factor out of the Pants and Socks classes and into the Clothing base class?&#10;A) material&#10;B) color&#10;C) isClean&#10;D) numberOfPockets

Accepted Answer

The attribute "numberOfPockets" is specific to pants and does not apply to socks or other clothing items, so it should not be included in the Clothing base class.

Question 3

Associations in a class diagram that have no navigability arrows at all indicate:&#10;A) That the two classes are the same.&#10;B) Inheritance from the same base class.&#10;C) That navigation can proceed in either direction across the association.&#10;D) That operations performed by this association do not return values.

Accepted Answer

When an association in a class diagram has no navigability arrows, it is indicating bidirectional navigation, which means that navigation can occur in either direction across the association.

Deck 26: ATM Case Study, Part 2: Implementing an Object-Oriented Design