Java Program to Add two Matrices

Last Updated : 20 Jan, 2025

Given two matrices A and B of the same size, the task is to add them in Java.

Examples:

Input: A[][] = {{1, 2}, {3, 4}} B[][] = {{1, 1}, {1, 1}} Output: {{2, 3}, {4, 5}} Input: A[][] = {{2, 4}, {3, 4}} B[][] = {{1, 2}, {1, 3}} Output: {{3, 6}, {4, 7}}

Program to Add Two Matrices in Java

Follow the Steps to Add Two Matrices in Java as mentioned below:

Take the two matrices to be added.
Create a new Matrix to store the sum of the two matrices.
Traverse each element of the two matrices and add them. Store this sum in the new matrix at the corresponding index.
Print the final new matrix.

Below is the implementation of the above approach:

Java

// Java program to add two matrices public class Geeks {  public static void main(String[] args)   {  // Input matrices  int A[][] = { { 1, 2 }, { 3, 4 } };  int B[][] = { { 1, 1 }, { 1, 1 } };  // Dimensions of the matrix  int rows = A.length;  int cols = A[0].length;  // Resultant matrix to store the sum  int sum[][] = new int[rows][cols];  // Adding two matrices  for (int i = 0; i < rows; i++) {  for (int j = 0; j < cols; j++) {  sum[i][j] = A[i][j] + B[i][j];  }  }  // Printing the resultant matrix  System.out.println("Resultant Matrix:");  for (int i = 0; i < rows; i++) {  for (int j = 0; j < cols; j++) {    // Print elements on the same line  System.out.print(sum[i][j] + " ");  }  // Move to the next line after printing each row  System.out.println();  }  } }