多次元配列を使用して、特定の販売員 (1 から 4 人の販売員) によって販売された製品 (製品の範囲は 1 から 5) の合計金額を格納しています。
T は、販売員を行 1 から 4 に、製品 ID を列 1 から 5 に配置しました。
私ができない唯一のことは、行を排他的に繰り返して各製品の合計を取得することです。つまり、列1：行1から4までの合計=製品1の合計、列2：行1から4までの合計= product2合計など.
テスト salesTest アプリケーション コードの後にクラス Sales を参照してください。
/*
test application for sales class
*/
package salestest;
import SalesLibary.Sales;
public class SalesTest {
public static void main(String[] args) {
// pass monthly stats to 4r(salespesons) * c5(products 1 to 5) using initialization method
int monthlySales [][]= {{13, 23, 45, 67, 56},
{43, 65, 76, 89, 90},
{43, 45, 76, 98, 90},
{34, 56, 76, 43, 87}};
//pass default values to constructor when creating object of class
Sales companySales = new Sales("Monneys Inc.", monthlySales);
companySales.displayMessage();
companySales.displaySales();
}//end main
}//end SalesTest class
//class Sales with associated methods
/*
Chapter 7: Practical Question 2
*/
package SalesLibary;
public class Sales {
//declare fields/members
private int salesTotals[][];
private String companyName;
//passs string and two dimensional array of sales stats to constructor from application object
public Sales(String name, int monthlySales[][]) {
companyName = name;
salesTotals = monthlySales;
}//end constructor
public void setCompanyName(String name) {
companyName = name;
}
public String getCompanyName() {
return companyName;
}
public void displaySales() {
//table heading
System.out.printf("The monthly sales stats for company %s are: ", companyName);
System.out.println(" ");//set columns headings
//create column headings representing products sold 1 to 5 by looping thru each colmn of row(salsperson)
System.out.print(" ");
for (int product = 0; product < salesTotals[0].length; product++) {
System.out.printf("Product %d ", product + 1);
}
System.out.println("Total ");
//create rows of table represnting salespersons 1 too 4, ten loop through array and print element
for (int salesPerson = 0; salesPerson < salesTotals.length; salesPerson++) {
System.out.printf("SalesPerson %2d", salesPerson + 1);
//use nested for loop to output all results
for (int total : salesTotals[salesPerson]) {
System.out.printf("%10d", total);
}
//call method to get total for each sales person by passing
//a row of products sold for each sales person to method
double total = getTotal(salesTotals[salesPerson]);
System.out.printf("%10.2f\n", total);
}//end outer for
System.out.println("Product Total: ");
double productSum = getTotalProduct();
System.out.printf("%10.2f", productSum);
//enumerate through each column and get sum to represent product total
}//end method Display sales
//method to calculate total, argument is array of results
public double getTotal(int salesTotals[]) {
int total = 0;
//loop thru array passed
for (int count : salesTotals) {
total += count;
}
return total;
}// end get salesPerson tital
//display message
public void displayMessage() {
System.out.printf("\nWlecome to %s monthly sales summaries!!!\n\n", getCompanyName());
}//end display message
//get total product sold
public double getTotalProduct() {
int productTotal[];
int totalProduct = 0;
//loop through array passed
for (int salesPerson = 0; salesPerson < salesTotals.length; salesPerson++) {
//go through each column of row[row]
productTotal = salesTotals[salesPerson];
//loop thirugh product total and get sum
for (int count : productTotal) {
totalProduct += count;
}
}//end outer for loop
return totalProduct;
}// end get salesPerson total
}//end Sales class