Finding the sum two files of matrices

Question:

How to find the sum of to matrices from two different files?

Answer:

In this example we populate one 4x4 matrix from the sum of two different 4x4 matrices files.

Code:

import java.io.*;
import java.util.*;
 
public class Matrices {
   public static void main(String[] args) {
 
      File f1 = new File("m1.txt");
      File f2 = new File("m2.txt");
 
      int[][] m1 = new int[4][4];
      int[][] m2 = new int[4][4];
      int[][] m3 = new int[4][4];
 
      try {
         Scanner sc1 = new Scanner(f1);
         Scanner sc2 = new Scanner(f2);
         for (int i=0; i<4; i++) {
            for (int j=0; j<4; j++) {
               m1[i][j]=sc1.nextInt();
               m2[i][j]=sc2.nextInt();
               m3[i][j]=m1[i][j]+m2[i][j];
            }
         }
 
      } catch (Exception e) {
      }
      System.out.println("m1: " + Arrays.deepToString(m1));
      System.out.println("m2: " + Arrays.deepToString(m2));
      System.out.println("m3: " + Arrays.deepToString(m3));
   }
}

Output:

$ cat m1.txt 
1 3 5 -1
4 8 -7 9
1 -1 3 8
9 11 6 8 

$ cat m2.txt 
6 11 3 7
9 -5 -8 -3
1 15 6 8
-2 -1 5 0 

$ java Matrices
m1: [[1, 3, 5, -1], [4, 8, -7, 9], [1, -1, 3, 8], [9, 11, 6, 8]]
m2: [[6, 11, 3, 7], [9, -5, -8, -3], [1, 15, 6, 8], [-2, -1, 5, 0]]
m3: [[7, 14, 8, 6], [13, 3, -15, 6], [2, 14, 9, 16], [7, 10, 11, 8]]