﻿ Java - Add two matrices of the same size

# Java: Add two matrices of the same size

## Java Array: Exercise-19 with Solution

Write a Java program to add two matrices of the same size.

Pictorial Presentation:

Sample Solution:

Java Code :

``````// Import the Java utility for reading input.
import java.util.Scanner;

// Define a class named Exercise19.
public class Exercise19 {
public static void main(String args[]) {
int m, n, c, d;

// Create a new Scanner object to read user input.
Scanner in = new Scanner(System.in);

// Prompt the user to input the number of rows for the matrix.
System.out.println("Input number of rows of the matrix");
m = in.nextInt();

// Prompt the user to input the number of columns for the matrix.
System.out.println("Input number of columns of the matrix");
n = in.nextInt();

// Create two-dimensional arrays to store matrix data.
int array1[][] = new int[m][n];
int array2[][] = new int[m][n];
int sum[][] = new int[m][n];

// Prompt the user to input elements of the first matrix.
System.out.println("Input elements of the first matrix");
for (c = 0; c < m; c++) {
for (d = 0; d < n; d++) {
array1[c][d] = in.nextInt();
}
}

// Prompt the user to input elements of the second matrix.
System.out.println("Input elements of the second matrix");
for (c = 0; c < m; c++) {
for (d = 0; d < n; d++) {
array2[c][d] = in.nextInt();
}
}

// Calculate the sum of the matrices.
for (c = 0; c < m; c++) {
for (d = 0; d < n; d++) {
sum[c][d] = array1[c][d] + array2[c][d];
}
}

// Display the result, which is the sum of the matrices.
System.out.println("Sum of the matrices:");
for (c = 0; c < m; c++) {
for (d = 0; d < n; d++) {
System.out.print(sum[c][d] + "\t");
}
System.out.println();
}
}
}
```
```

Sample Output:

```Input number of rows of matrix
2
Input number of columns of matrix
2
Input elements of first matrix
1
2
3
4
Input the elements of second matrix
5
6
7
8
Sum of the matrices:-
6       8
10      12
```

Flowchart:

Java Code Editor:

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