申論題內容
第32題
Given:
1. class Mammal{}
2.
3. class Raccoon extends Mammal
4. Mammal m = new Mammal();
5. }
6.
7. class BabyRaccoon extends Mammal{}
Which four statments 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.
SCJP 6.0 認證教戰手冊 黃彬華著 碁峰出版
17
F. BabyRaccoon is-a BabyRaccoon.
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