////to multiply 2 matrices.2 matrices and corresponding rows and columns are arguments

static void multiply(int a[][],int b[][],int m1,int n1,int m2,int n2){

//check if no of columns of first matrix is

//equal to number of rows of second matrix

if (n1 != m2)

System.out.println("Multiplication is not possible");

else

{

int i,j;

//initialize new matrix to store product

int c[][] = new int[m1][n2];

//matrix multiplication

for (i = 0; i < m1; i++)

{

for (j = 0; j < n2; j++)

{

for (int k = 0; k < n1; k++)

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

}

}

//to print product matrix

System.out.println("Product:");

for (i = 0; i < m1; i++)

{

for (j = 0; j < n2; j++)

{

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

}

System.out.println();

}

}

}

//driver code

public static void main(String[] args) {

int i, j, temp;

//accept the matrices, rows and columns as user input

Scanner s = new Scanner(System.in);

System.out.print("Enter the number of rows and columns in first matrix:");

int m1 = s.nextInt();

int n1 = s.nextInt();

int a[][] = new int[m1][n1];

System.out.print("Enter the elements of first matrix:");

for (i = 0; i < m1; i++)

{

for (j = 0; j < n1; j++)

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

}

System.out.print("Enter the number of rows and columns in second matrix:");

int m2 = s.nextInt();

int n2 = s.nextInt();

int b[][] = new int[m2][n2];

System.out.print("Enter the elements of second matrix:");

for (i = 0; i < m2; i++)

{

for (j = 0; j < n2; j++)

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

}

//call function to multiply the matrices

multiply(a,b,m1,n1,m2,n2);

}