SCJP 1.6版考題 019

Which Man class properly represents the relationship
  "Man has a best friend who is a Dog"?
  
  A. class Man extends Dog{}
  B. class Man implements Dog{} 
  C. class Man{private BestFriend dog;}
  D. class Man{private Dog bestFriend;}
  E. class Man{private Dog<bestFriend>;}
  F. class Man{private BestFriend<dog>;}

解答

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Ans: D

解說: 無