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Collections and Generics

Question : 16

Total: 53

Given a pre-generics implementation of a method:

1. public static int sum(List list) {
2.   int sum = 0;
3.   for ( Iterator iter = list.iterator(); iter.hasNext(); ) {
4.    int i = ((Integer)iter.next()).intValue();
5.    sum += i;
6.   }
7.   return sum;
8. }

Which three changes must be made to the method sum to use generics?(Choose three.)

remove line 4
replace line 4 with "int i = iter.next();"
replace line 3 with "for (int i : intList) {"
replace line 3 with "for (Iterator iter : intList) {"
replace the method declaration with "sum(List intList)"
replace the method declaration with "sum(List intList)"

Validate

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