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Java Program to Add two Matrices

Last Updated : 12 Jul, 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}}

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 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();
        }
    }
}

Resultant Matrix:
2 3 
4 5 

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