Java program to subtract two matrices (subtraction of two matrices)

Program to subtract two matrices in java

import java.util.Scanner;

public class MatrixSubtraction {
  public static void main(String args[]) {
    int n, i, j;
    //scanner class object 
    Scanner scan = new Scanner(System.in);

    //input total number of rows and cols (i.e. base for both)
    System.out.print("Enter the base of the matrices : ");
    n = scan.nextInt();

    //matrix (two_d array) object declarations
    int mat1[][] = new int[n][n];
    int mat2[][] = new int[n][n];
    int mat3[][] = new int[n][n];

    //input matrix 1
    System.out.println("Enter the elements of the first matrix : ");
    for (i = 0; i < n; i++) {
      for (j = 0; j < n; j++) {
        mat1[i][j] = scan.nextInt();
      }
    }

    //input matrix 2
    System.out.println("Enter the elements of the second matrix : ");
    for (i = 0; i < n; i++) {
      for (j = 0; j < n; j++) {
        mat2[i][j] = scan.nextInt();
      }
    }

    //subtracting matrices 
    System.out.println("Subtracting Matrices --Matrix1 - Matrix2--");
    for (i = 0; i < n; i++) {
      for (j = 0; j < n; j++) {
        mat3[i][j] = mat1[i][j] - mat2[i][j];
      }
    }

    //printing final matrix
    System.out.println("Result of Matrix1 - Matrix2 is : ");
    for (i = 0; i < n; i++) {
      for (j = 0; j < n; j++) {
        System.out.print(mat3[i][j] + " ");
      }
      System.out.println();
    }
  }
}

Output 1

Enter the base of the matrices : 3
Enter the elements of the first matrix : 
6 7 8
9 8 7
6 7 8
Enter the elements of the second matrix : 
6 6 8
8 8 6
6 6 8
Subtracting Matrices --Matrix1 - Matrix2--
Result of Matrix1 - Matrix2 is : 
0 1 0 
1 0 1 
0 1 0

Output 2

Enter the base of the matrices : 2
Enter the elements of the first matrix : 
55 66
99 88
Enter the elements of the second matrix : 
44 55
88 77
Subtracting Matrices --Matrix1 - Matrix2--
Result of Matrix1 - Matrix2 is : 
11 11 
11 11