Write a program in Java to multiply two matrix.

// Write a program in Java to multiply two matrix

import java.util.*;

public class Code8 {

public static void main(String[] args) {

Scanner s = new Scanner(System.in);

System.out.print("Enter number of rows in A: ");

int rowsInA = s.nextInt();

System.out.print("Enter number of columns in A / rows in B: ");

int columnsInA = s.nextInt();

System.out.print("Enter number of columns in B: ");

int columnsInB = s.nextInt();

int[][] a = new int[rowsInA][columnsInA];

int[][] b = new int[columnsInA][columnsInB];

System.out.println("Enter matrix A");

for (int i = 0; i < a.length; i++) {

for (int j = 0; j < a[0].length; j++) {

a[i][j] = s.nextInt();

} } System.out.println("Enter matrix B");

for (int i = 0; i < b.length; i++) {

for (int j = 0; j < b[0].length; j++) {

b[i][j] = s.nextInt();

} } int[][] c = multiply(a, b);

System.out.println("Product of A and B is");

for (int i = 0; i < c.length; i++) {

for (int j = 0; j < c[0].length; j++) {

System.out.print(c[i][j] + " ");

} System.out.println();

} } public static int[][] multiply(int[][] a, int[][] b) {

int rowsInA = a.length;

int columnsInA = a[0].length; // same as rows in B

int columnsInB = b[0].length;

int[][] c = new int[rowsInA][columnsInB];

for (int i = 0; i < rowsInA; i++) {

for (int j = 0; j < columnsInB; j++) {

for (int k = 0; k < columnsInA; k++) {

c[i][j] = c[i][j] + a[i][k] * b[k][j];

} } } return c;

} }