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我是初學者，當談到Java的。我有一個簡單的Java編程任務。這裏是該計劃的基礎：如何添加和多條語句在while循環中的Java
「最佳購買是接受電子設備和配件的在線訂單，他們開發了一個程序，允許用戶從一個項目菜單中選擇購買的設備。一個程序允許用戶（客戶）選擇要購買的物品，計算訂購物品的價格，並向客戶顯示該信息的收據（假設銷售稅率爲6.5％）「
您的程序應提示用戶（客戶）輸入以下信息：
- 客戶名稱 臺
- 電子設備及配件購買
然後程序輸出以下信息：
- 客戶姓名
- 項目的總數排序
- 價格的菜單項目前的營業稅
- 營業稅
- 總額由於
這裏是我的問題是如何，如果根據什麼數字用戶選擇我裏面添加我的嵌套的值是多少？
例句：用戶選擇1,2,3,10（要退出環路）
這裏是我的代碼：
import java.util.Scanner;
public class OnlinePurchase {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
//Declare Variables
Scanner input = new Scanner(System.in);
String sCustomerName =""; //Stores the Customer's Name
int nSelection = 0; //Stores the value entered by the user
int nSum = 0; //Stores sum of values entered
int nCount = 0; //Number of values entered
int nPrice = 0;
//Declare Constants
final int SENTINEL = 10; //Used to end loop
//Promt User to enter the their name.
System.out.print("Please enter the your name: ");
//Read Customer Name input from user
sCustomerName = input.nextLine();
//Print to Blank Line for spacing
System.out.println("\n");
//Print Purchase Menu
System.out.println("BEST PURCHASE PRODUCTS:");
System.out.println("1. Smartphone..........$249");
System.out.println("2. Smartphone Case.... $39");
System.out.println("3. PC Laptop...........$1149");
System.out.println("4. Tablet..............$349");
System.out.println("5. Tablet Case.........$49");
System.out.println("6. eReader.............$119");
System.out.println("7. PC Desktop..........$889");
System.out.println("8. LED Monitor.........$299");
System.out.println("9. Laser Printer.......$399");
System.out.println("10.Complete my order");
//Print to Blank Line for spacing
System.out.println("\n");
while (nSelection != SENTINEL) {
//Calculate sum
nSum = nPrice + nSum;
//Increment counter
nCount++; //or nCount = nCount + 1;
//Promt User to enter the an item from the menu.
System.out.print("Please enter item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
if (nSelection == 1) {
nPrice = 249;
//Promt User to enter the an item from the menu.
System.out.print("Please enter another item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
}
else if (nSelection == 2) {
nPrice = 39;
//Promt User to enter the an item from the menu.
System.out.print("Please enter another item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
}
else if (nSelection == 3) {
nPrice = 1149;
//Promt User to enter the an item from the menu.
System.out.print("Please enter another item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
}
else if (nSelection == 4) {
nPrice = 349;
//Promt User to enter the an item from the menu.
System.out.print("Please enter another item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
}
else if (nSelection == 5) {
nPrice = 49;
//Promt User to enter the an item from the menu.
System.out.print("Please enter another item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
}
else if (nSelection == 6) {
nPrice = 119;
//Promt User to enter the an item from the menu.
System.out.print("Please enter another item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
}
else if (nSelection == 7) {
nPrice = 899;
//Promt User to enter the an item from the menu.
System.out.print("Please enter another item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
}
else if (nSelection == 8) {
nPrice = 299;
//Promt User to enter the an item from the menu.
System.out.print("Please enter another item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
}
else if (nSelection == 9) {
nPrice = 399;
//Promt User to enter the an item from the menu.
System.out.print("Please enter another item from the menu above: ");
//Read input from user for selected purchase
nSelection = input.nextInt();
}
}//end while user did not enter 10
//Print blank line
System.out.println();
//Print Thank You message
System.out.println("Thank you for ordering with Best Purchase,"+sCustomerName);
//Print number of integers entered
System.out.println("Total Items Ordered: " + nCount);
//Print number of integers entered
System.out.println("Total: $" + nSum);
}//end main class
}//end public class
Stack Overflow是不是一門功課完成的服務。 – redFIVE
首先，如果你想讓用戶選擇多個項目，你必須在循環中運行你的邏輯。其次，不是'nPrice = 119;'你可以做'nPrice + = 119;' - 例如... – alfasin
@redFIVE你有沒有完全閱讀他的問題？他沒有要求我們去做他的HW。你應該收回你的失敗。 – alfasin