Use foreach(for each) style for on a two-dimensional array.
public class MainClass { public static void main(String args[]) { int sum = 0; int nums[][] = new int[3][5]; for (int i = 0; i < 3; i++) for (int j = 0; j < 5; j++) nums[i][j] = (i + 1) * (j + 1); for (int x[] : nums) { for (int y : x) { System.out.println("Value is: " + y); sum += y; } } System.out.println("Summation: " + sum); } }