試題詳解

3. import java.util.*；

 4. public class G1{ 

5. public void takeList(List＜? extends String＞ list){ 

6. //insert code here 

7. } 

8. }

 Which three code fragments, inserted independently at line 6, will compile? (Choose three.)
(A) list.add("foo")；
(B) Object o = list；
(C) String s = list.get(0)；
(D) list = new ArrayList＜String＞()；
(E) list = new ArrayList＜Object＞()；