SCJP 1.6版考題 032

1. class Mammal{}
2.
3. class Raccoon extends Mammal {
4. Mammal m = new Mammal();
5. }
6.
7. class BabyRaccoon extends Mammal{}


Which four statements are true? (Choose four.)

  A. Raccoon is-a Mammal.
  B. Raccoon has-a Mammal.
  C. BabyRaccoon is-a Mammal.
  D. BabyRaccoon is-a Raccoon.
  E. BabyRaccoon has-a Mammal.
  F. BabyRaccoon is-a BabyRaccoon.

解答

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Ans: A B C F

解說: Raccoon 浣熊,Mammal哺乳類動物