单选题

public class ListParamTest&...

Question

public class ListParamTest {
public static void resetList(List<Integer> dataList) {
dataList.subList(2,4).set(0,40)
dataList = new ArrayList<Integer>(dataList)
dataList.add(50)
}
public static void setOne(List<Integer> dataList) {
dataList.set(3,100)
}
public static void main(String[] args){
List<Integer> dataList = new ArrayList<Integer>(Arrays.asList(10,20,30,null))
resetList(dataList)
setOne(dataList)
int sum = 0
for(Integer v:dataList){
sum +=v
}
System.out.println(sum)
}

A. 160

B. 170

C. 抛出NullPointerException异常

D. 抛出ArrayIndexOutOfBoundsException异常