Java program to add two matrices


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This java program add two matrices. You can add matrices of any order.

This java program

import java.util.Scanner;
class AddTwoMatrix {
	public static void main(String args[]) {
		int m, n, c, d;
		Scanner in = new Scanner(System.in);
		System.out.println("Enter the number of rows and columns of matrix");
		m = in.nextInt();
		n  = in.nextInt();
		int first[][] = new int[m][n];
		int second[][] = new int[m][n];
		int sum[][] = new int[m][n];
		System.out.println("Enter the elements of first matrix");
		for (  c = 0 ; c < m ; c++ )
		         for ( d = 0 ; d < n ; d++ )
		            first[c][d] = in.nextInt();
		System.out.println("Enter the elements of second matrix");
		for ( c = 0 ; c < m ; c++ )
		         for ( d = 0 ; d < n ; d++ )
		            second[c][d] = in.nextInt();
		for ( c = 0 ; c < m ; c++ )
		         for ( d = 0 ; d < n ; d++ )
		             sum[c][d] = first[c][d] + second[c][d];
		//replace '+' with '-' to subtract matrices
		System.out.println("Sum of entered matrices:-");
		for ( c = 0 ; c < m ; c++ ) {
			for ( d = 0 ; d < n ; d++ )
			            System.out.print(sum[c][d]+"\t");
			System.out.println();
		}
	}
}


Output

This code adds two matrix, you can modify it to add any number of matrices. You can create a Matrix class and create it’s objects and then create an add method which sum the objects, then you can add any number of matrices by repeatedly calling the method using a loop.






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