Sum of two arrays

Well, if their dimension is 1x1 and they both have the same number of elements, a simple loop should do:

int[] a = {1,2,3};
int[] b = {4,5,6};
int[] c = new int[3];

for(int i=0;i<a.size();i++) {
c[i] = a[i]+b[i];
}