Java program to add two matrices

In this post, we will see how to add two matrices in java.I am giving example for 33 matrix. You can extend it to nn matrices.

import java.util.Scanner;

public class MatrixOperator
{
   public static void main(String args[])
   {
       int i, j;
       int mat1[][] = new int[3][3];
       int mat2[][] = new int[3][3];
       int res[][] = new int[3][3];
       Scanner scanner = new Scanner(System.in);

       System.out.print("Enter matrix 1 elements : ");
       for(i=0; i<3; i++){
           for(j=0; j<3; j++){
               mat1[i][j] = scanner.nextInt();
           }
       }

       System.out.print("Enter matrix 2 elements : ");
       for(i=0; i<3; i++){
           for(j=0; j<3; j++){
               mat2[i][j] = scanner.nextInt();
           }
       }

       for(i=0; i<3; i++){
           for(j=0; j<3; j++){
               res[i][j] = mat1[i][j] + mat2[i][j];
           }
       }

       System.out.print("The new matrix is :\n");
       for(i=0; i<3; i++){
           for(j=0; j<3; j++){
               System.out.print(res[i][j]+ " ");
           }
           System.out.println();
       }
   }
}

Output:

That’s all about adding two matrices.