How to perform a sum of an int[] array [duplicate]

Question

Given an array A of 10 ints, initialize a local variable called sum and use a loop to find the sum of all numbers in the array A.

This was my answer that I submitted:

sum = 0;
while( A, < 10) {
   sum = sum += A;
}

I didn't get any points on this question. What did I do wrong?

Answer 1

Once java-8 is out (March 2014) you'll be able to use streams:

int sum = IntStream.of(a).sum();

or even

int sum = IntStream.of(a).parallel().sum();