Convert php array_sum to java

$a = array(2,开发者_StackOverflow 4, 6, 8);
echo "sum(a) = " . array_sum($a) . "\n";  //==20

how i can do this in java?

    long array_sum(int...array)
    {
        long sum = 0;
        for(int value : array)
            sum += value;
        return sum;
    }

Example:

System.out.println(array_sum(1, 2, 3, -1));
System.out.println(array_sum(1, 2));
System.out.println(array_sum(new int[]{1,2,3,4,5}));

5
3
15

Google search says, "No". Is it not possible to loop through the array and find the sum?