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AP Computer Science A
Unit 9 – Inheritance in Object-Oriented Programming
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Consider the following class hierarchy: Class Animal contains objects like dog, cat, and bird, and Class WildAnimal, a subclass of Class Animal, contains objects like lion and tiger. Which of the following statements is true?
All WildAnimal objects are also Animal objects, and vice versa.
All WildAnimal objects are also Animal objects, but not all Animal objects are WildAnimal objects.
No WildAnimal object is also an Animal object, and vice versa.
All Animal objects are also WildAnimal objects, but not all WildAnimal objects are Animal objects.
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AP Computer Science A - 9.1 Creating Superclasses and Subclasses
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Class hierarchy
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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
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