Matrix Multiplication in Java

Write a Java program to perform matrix multiplication.

Multiplication of two matrices is possible only if number of columns in matrix A = number of rows in matrix B.

The dimensions of the resulting matrix will be:
Number of rows of matrix A × Number of columns of matrix B.

import java.util.Scanner;
class Multiply{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        System.out.print("Rows of matrix 1: ");
        int r1 = Integer.parseInt(in.nextLine());
        System.out.print("Columns of matrix 1: ");
        int c1 = Integer.parseInt(in.nextLine());
        System.out.print("Rows of matrix 2: ");
        int r2 = Integer.parseInt(in.nextLine());
        System.out.print("Columns of matrix 2: ");
        int c2 = Integer.parseInt(in.nextLine());
        if(c1 != r2){
            System.out.println("Can't multiply!");
            return;
        }
        int a[][] = new int[r1][c1];
        int b[][] = new int[r2][c2];
        int c[][] = new int[r1][c2];
        System.out.println("Enter matrix 1 elements:");
        for(int i = 0; i < r1; i++){
            for(int j = 0; j < c1; j++){
                a[i][j] = Integer.parseInt(in.nextLine());
            }
        }
        System.out.println("Enter matrix 2 elements:");
        for(int i = 0; i < r2; i++){
            for(int j = 0; j < c2; j++){
                b[i][j] = Integer.parseInt(in.nextLine());
            }
        }
        for(int i = 0; i < r1; i++){
            for(int j = 0; j < c2; j++){
                for(int k = 0; k < c1; k++){
                    c[i][j] += a[i][k] * b[k][j];
                }
            }
        }
        System.out.println("Product:");
        for(int i = 0; i < r1; i++){
            for(int j = 0; j < c2; j++){
                System.out.print(c[i][j] + "\t");
            }
            System.out.println();
        }
    }
}

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