java - 遍历一周中的每一天

我想知道是否有人可以告诉我输入6种产品或/和6种数量后是否可以遍历一周中的每一天。因此，基本上该程序显示星期一，然后循环执行6次，然后转到周二循环6次，然后执行星期三。如果可以，我能得到一些想法吗？？？我真的很感谢您的帮助。我一直没有运气谷歌，那是因为我知道我不是问谷歌正确的问题。

 import java.util.Scanner;

      public class Mailorder {

         public static void main(String[] args) {

         //create a scanner
         Scanner input = new Scanner(System.in);

         //declare variables

         double product1 = 3.75;
         double product2 = 5.95;
         double product3 = 8.75;
         double product4 = 6.92;
         double product5 = 8.75;
         double product6 = 7.87;
         double sum2 = 0;
         int sum1 = 0;
         double total = 0.00;
         int product;
         int quantity;

         //Monday
         System.out.print("Monday");
         System.out.println();

         //read in product #
         System.out.print("Enter a product number: ");
         product = input.nextInt();

         //read in quantity sold
         System.out.print("Enter quantity sold: ");
         quantity = input.nextInt();


         //keep reading data until the input is 0
         while (quantity != -1) {
                 sum1 += quantity;

         //switch case
         switch (product)
        {
         case 1: total = product1 * quantity; break;
         case 2: total = product2 * quantity; break;
         case 3: total = product3 * quantity; break;
         case 4: total = product4 * quantity; break;
         case 5: total = product5 * quantity; break;
         case 6: total = product6 * quantity; break;
        }

       sum2 +=total;

       //read the next data
       System.out.print("Enter a product number: ");
             product = input.nextInt();

       System.out.print("Enter quantity sold: ");
             quantity = input.nextInt();

        }
      //print results
      System.out.println("The total retail value of all products sold last week $" + sum2);

    }
  }

最佳答案

抱歉未格式化的文本，我从手机回复。

我认为您需要的是此运算符“％”

在while循环中，您可以增加计数

int count=0;
String currentDay="Monday";
String nextDay;


// your while loop start here

count++;

if(count%6 == 0)
{
    switch(currentDay)
    {
    case "Monday": nextDay="Tuesday"; break;
    //etc
    }
currentDay = nextDay;
}

％运算符会提醒您除法。