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Question

What is the output of this program? 
    import java.util.*;
    class Output 
    {
        public static double sumOfList(List<? extends Number> list)
        {
            double s = 0.0;
            for (Number n : list)
                s += n.doubleValue();
            return s;
        }
        public static void main(String args[]) 
        {
           List<Double> ld = Arrays.asList(1.2, 2.3, 3.5);
           System.out.println(sumOfList(ld));
        }
    }

a.

5.0

b.

7.0

c.

8.0

d.

6.0

Posted under Miscellaneous Topics in Java Java Programming

Answer: (b).7.0

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