試題詳解

1. package animals.mammals； 

2. 

3. public class GrizzlyBear extends Bear{ 

4. void hunt() { 

5. Salmon s = findSalmon()；

 6. s.consume()；

 7. }

 8. 

} 1. package animals.fish； 

2.

 3. public class Salmon extends Fish {

 4. public void consume() { /* do stuff */ }

 5. }

 If both classes are in the correct directories for their packages, and the Mammal class correctly defines the findSalmon() method, which change allows this code to compile?
(A) add import animals. mammals.*； at line 2 in Salmon.java
(B) add import animals.fish.*； at line 2 in GrizzlyBearjava
(C) add import animals.fish.Salmon.*； at line 2 in GrizzlyBear.java
(D) add import animals. mammals.GrizzlyBear*； at line 2 in Salmon.java