QUESTION 41

QUESTION 41 

Given a pre-generics implementation of a method: 

 

11. public static int sum(List list) { 

12.    int sum = 0; 

13.    for ( Iterator iter = list.iterator(); iter.hasNext(); ) { 

14.        int i = ((Integer)iter.next()).intValue(); 

15.        sum += i; 

16.    } 

17.    return sum; 

18. } 

 

What three changes allow the class to be used with generics and avoid an unchecked warning? (Choose three.) 

A. Remove line 14. 

B. Replace line 14 with int i = iter.next(); 

C. Replace line 13 with for (int i : intList) { 

D. Replace line 13 with for (Iterator iter : intList) { 

E. Replace the method declaration with sum(List<int> intList) 

F. Replace the method declaration with sum(List<Integer> intList) 

Solution : ACF