Matrix_sum.java

import java.util.*;
class Matrix_sum {
    int r, c, x[][], y[][], z[][];
    Scanner sc = new Scanner(System.in);

    Matrix_sum(int r1, int c1) {
        r = r1;
        c = c1;
        x = new int[r1][c1];
        y = new int[r1][c1];
        z = new int[r1][c1];
    }
    void input() {
        System.out.println("Enter elements of the 1st Matrix:");
        for (int i = 0; i < r; i++) {
            for (int j = 0; j < c; j++) {
                x[i][j] = sc.nextInt();
            }
        }
        System.out.println("Enter elements of the 2nd Matrix:");
        for (int i = 0; i < r; i++) {
            for (int j = 0; j < c; j++) {
                y[i][j] = sc.nextInt();
            }
        }
    }

    void calculate() {
        for (int i = 0; i < r; i++) {
            for (int j = 0; j < c; j++) {
                z[i][j] = x[i][j] + y[i][j];
            }
        }
    }
    void display() {
        System.out.println("Output Matrix:");
        for (int i = 0; i < r; i++) {
            for (int j = 0; j < c; j++) {
                System.out.print(z[i][j] + "\t");
            }
            System.out.println();
        }
    }
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the number of rows and columns of the matrices:");
        int r = sc.nextInt();
        int c = sc.nextInt();

        if (r > 0 && c > 0) {
            Matrix_sum obj = new Matrix_sum(r, c);
            obj.input();
            obj.calculate();
            obj.display();
        } else {
            System.out.println("Error: Rows and columns should be greater than 0");
        }
        sc.close();
    }
}