add two matrices of the same size in java

1public class AddTwoMatrices {
2
3    public static void main(String[] args) {
4
5        int r, c, i, j;
6        Scanner in = new Scanner(System.in);
7
8        System.out.println("Enter the row size of the matrix:");
9        r = in.nextInt();
10
11        System.out.println("Enter the column size of the matrix:");
12        c = in.nextInt();
13
14        int array1[][] = new int[r][c];
15        int array2[][] = new int[r][c];
16        int sum[][] = new int[r][c];
17
18        System.out.println("Input elements of the first matrix:");
19        for (i = 0; i < r; i++) {
20            for (j = 0; j < c; j++) {
21                array1[i][j] = in.nextInt();
22            }
23        }
24
25        System.out.println("Input elements of the second matrix:");
26        for (i = 0; i < r; i++) {
27            for (j = 0; j < c; j++) {
28                array2[i][j] = in.nextInt();
29            }
30        }
31
32        for (i = 0; i < array1.length; i++) {
33            for (j = 0; j < array2.length; j++) {
34                sum[i][j] = array1[i][j] + array2[i][j];
35                System.out.print(sum[i][j] + "\t");
36            }
37            System.out.println();
38        }
39    }
40}