User talk:Bca21

import java.util.Scanner;

class Matrix1 {

   private int[][] a;
   private int m; // Number of rows
   private int n; // Number of columns

   // Constructor
   public Matrix1(int m, int n) {
       this.m = m;
       this.n = n;
       this.a = new int[m][n];
   }

   Scanner s = new Scanner(System.in);

   // Method to read the matrix
   public void ReadMatrx() {
       System.out.println("Enter the elements of the " + m + "x" + n + " matrix:");
       for (int i = 0; i < m; i++) {
           for (int j = 0; j < n; j++) {
               a[i][j] = s.nextInt();
           }
       }
   }

   // Method to display the matrix
   public void DispMatrix() {
       System.out.println("The matrix is:");
       for (int i = 0; i < m; i++) {
           for (int j = 0; j < n; j++) {
               System.out.print(a[i][j] + " ");
           }
           System.out.println();
       }
   }

   // Method to calculate the product of two matrices
   public static Matrix1 Product(Matrix1 m1, Matrix1 m2) {
       if (m1.n != m2.m) {
           throw new IllegalArgumentException("Matrix multiplication not possible. Columns of the first matrix must equal rows of the second matrix.");
       }
       Matrix1 r = new Matrix1(m1.m, m2.n);
       for (int i = 0; i < m1.m; i++) {
           for (int j = 0; j < m2.n; j++) {
               r.a[i][j] = 0;
               for (int k = 0; k < m1.n; k++) {
                   r.a[i][j] += m1.a[i][k] * m2.a[k][j];
               }
           }
       }
       return r;
   }

   // Method to multiply each element of the matrix by a constant
   public void Product(int x) {
       for (int i = 0; i < m; i++) {
           for (int j = 0; j < n; j++) {
               a[i][j] *= x;
           }
       }
   }

}

// Main class to test the Matrix1 class public class Matrx {

   public static void main(String[] args) {
       // Initialize two matrices
       Matrix1 m1 = new Matrix1(2, 3); // 2x3 matrix
       Matrix1 m2 = new Matrix1(3, 4); // 3x4 matrix

       // Read matrices
       m1.ReadMatrx();
       m2.ReadMatrx();

       // Display matrices
       System.out.println("Matrix 1:");
       m1.DispMatrix();
       System.out.println("Matrix 2:");
       m2.DispMatrix();

       // Multiply matrices and display result
       try {
           Matrix1 r = Matrix1.Product(m1, m2);
           System.out.println("Product of Matrix 1 and Matrix 2:");
           r.DispMatrix();
       } catch (Exception e) {
           System.out.println(e.getMessage());
       }

       // Multiply matrix 1 with a constant and display result
       System.out.println("Matrix 1 after multiplying with a constant (2):");
       m1.Product(2);
       m1.DispMatrix();
   }

}

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