Create a matrix that contains sales of 4 products for 4 regions and perform the following operations a. Total sales of products for region-wise b. Total sales of products product-wise c. Highest and lowest selling products d. Total sales made by the company

import java.util.Scanner;

class Product {

    public static void main(String[] args) {
        int sum = 0, tsum = 0, i, j;
        Scanner in = new Scanner(System.in);
        int arr[][] = new int[4][4];
        System.out.println("Enter product");
        for (i = 0; i <= 3; i++) {
            for (j = 0; j <= 3; j++) {
                arr[i][j] = in.nextInt();
            }
        }
        int h = arr[0][0], l = arr[0][0];
        System.out.println("Matrix form of entered product is:");
        for (i = 0; i <= 3; i++) {
            for (j = 0; j <= 3; j++) {
                System.out.print("\t" + arr[i][j]);
            }
            System.out.println();
        }
        for (i = 0; i <= 3; i++) {
            System.out.println("Total sales of product for region " + i + "is:");
            for (j = 0; j <= 3; j++) {
                sum = sum + arr[j][i];
                tsum = tsum + arr[i][j];
            }
            System.out.println(sum);
            sum = 0;
        }
        for (i = 0; i <= 3; i++) {
            System.out.println("Total sales of product for product" + i + "is");
            for (j = 0; j <= 3; j++) {
                sum = sum + arr[i][j];
            }
            System.out.println(sum);
            sum = 0;
        }
        for (i = 0; i <= 3; i++) {
            for (j = 0; j <= 3; j++) {
                if (h < arr[i][j]) {
                    h = arr[i][j];
                }
            }
        }
        for (i = 0; i <= 3; i++) {
            for (j = 0; j <= 3; j++) {
                if (l > arr[i][j]) {
                    l = arr[i][j];
                }
            }
        }
        System.out.println("Highhest selling product is: " + h);
        System.out.println("Lowest selling product is: " + l);
        System.out.println("Total sales made by company is: " + tsum);
    }
}