我正在为一堂课做Java作业。我写了下面的商店程序，用户输入了一个4位数的ID以及他们为该商店ID所拥有的钱。这些信息被放入一个数组中。检索总计和商店ID。
在我的程序的下一部分中，我将从每个数据组中检索最小值和最大值：偶数和奇数存储ID号。我试图通过检索原始数据并将它们放入一个新数组来做到这一点。甚至将数据转换为偶数数组，将奇数数据转换为奇数数组。在下面的代码中，我正在测试偶数部分。一旦它工作，我将在奇数部分复制。
现在，以下代码会跳过我的请求。我不知道如何解决这个问题。
任何见解将不胜感激！
import java.util.Scanner;
import java.util.ArrayList;
import java.util.Collections;
public class Bonus
{
public static void main (String[] arg)
{
Scanner in = new Scanner(System.in);
String storeID, highID;
double grandTotalSales = 0;
double evenGrandTotal = 0;
double oddGrandTotal = 0;
double evenTotalSale;
double oddTotalSale;
double largestYet = 0;
double maxValue = 0;
int numPenn, numNick, numDime, numQuar, numHalf, numDol;
boolean more = true;
boolean report = true;
String input;
int inputopt;
char cont;
char check1, highStoreID;
Store myStore;
ArrayList<Store> storeList = new ArrayList<Store>();
ArrayList<Store> evenStoreList = new ArrayList<Store>();
while(more)
{
in = new Scanner(System.in);
System.out.println("Enter 4 digit store ID");
storeID = in.nextLine();
System.out.println("Enter num of Penny");
numPenn = in.nextInt();
System.out.println("Enter num of Nickel");
numNick = in.nextInt();
System.out.println("Enter num of Dime");
numDime = in.nextInt();
System.out.println("Enter num of Quarter");
numQuar = in.nextInt();
System.out.println("Enter num of Half dollars");
numHalf = in.nextInt();
System.out.println("Enter num of Dollar bills");
numDol = in.nextInt();
myStore = new Store(storeID, numPenn, numNick, numDime, numQuar, numHalf, numDol);
storeList.add(myStore);
in = new Scanner(System.in);
System.out.println("More stores: Yes or No");
input = in.nextLine();
cont = input.charAt(0);
if((cont == 'N')||(cont == 'n'))
more = false;
}
while(report)
{
in = new Scanner(System.in);
System.out.println("What would you like to do? \nEnter: \n1 print Odd Store ID's report \n2 print Even Store ID's report \n3 to Exit");
inputopt = in.nextInt();
if(inputopt == 2)
{
System.out.println("\nEven Store ID's Report:");
System.out.println("Store ID" + " | " + " Total Sales" + " | " + "Even Total Sales");
for(int i = 0; i < storeList.size(); ++i)
{
myStore = (Store)(storeList.get(i));
storeID = myStore.getStoreID();
check1 = storeID.charAt(3);
if(check1 == '0' || check1 == '2' || check1 == '4'|| check1 == '6' || check1 =='8')
{
myStore.findEvenValue();
evenTotalSale = myStore.getEvenValue();
evenGrandTotal = evenGrandTotal + Store.getEvenValue();
System.out.println((storeList.get(i)).getStoreID() + " | " + (storeList.get(i)).getEvenValue() + " | " + (storeList.get(i)).getEvenGrandValue());
}
}
in = new Scanner(System.in);
System.out.println("Do want to print the highest and lowest sales? \nEnter yes or no");
input = in.nextLine();
cont = input.charAt(0);
if((cont == 'Y')||(cont == 'y'))
{
evenTotalSale = 0;
for(int i = 1; i < evenStoreList.size(); ++i)
{
myStore = (Store)(evenStoreList.get(i));
highID = myStore.getStoreID();
myStore.findEvenValue();
largestYet = myStore.getEvenValue();
if(largestYet > evenTotalSale)
{
Collections.copy(storeList, evenStoreList);
System.out.println("Store ID with highest sales is: ");
System.out.println((evenStoreList.get(i)).getStoreID() + " | " + largestYet);
}
}
}
else if((cont == 'N')||(cont == 'n'))
report = true;
}
else
if(inputopt == 1)
{
System.out.println("\nOdd Store ID's Report:");
System.out.println("Store ID" + " | " + " Total Sales" + " | " + " Odd Total Sales");
for(int i = 0; i < storeList.size(); ++i)
{
myStore = (Store)(storeList.get(i));
storeID = myStore.getStoreID();
check1 = storeID.charAt(3);
if(check1 == '1' || check1 == '3' || check1 == '5'|| check1 == '7' || check1 =='9')
{
myStore.findOddValue();
oddTotalSale = myStore.getOddValue();
oddGrandTotal = oddGrandTotal + Store.getOddValue();
System.out.println((storeList.get(i)).getStoreID() + " | " + (storeList.get(i)).getOddValue() + " | " + (storeList.get(i)).getOddGrandValue());
}
}
}
else
if(inputopt == 3)
report = false;
} // close while report
}// close of main
} // close class
类商店：
public class Store
{
private String storeID;
private int numPenn, numNick, numDime, numQuar, numHalf, numDol;
Coin penn = new Coin("Penn", 0.01);
Coin nick = new Coin("Nickel", 0.05);
Coin dime = new Coin("Dime", 0.10);
Coin quar = new Coin("Quar", 0.25);
Coin half = new Coin("Half", 0.50);
Coin dol = new Coin("Dollar", 1.00);
private static double evenTotalSale;
private static double oddTotalSale;
static double evenGrandTotal = 0;
static double oddGrandTotal = 0;
public Store (String storeID, int numPenn, int numNick, int numDime, int numQuar, int numHalf, int numDol)
{
this.storeID = storeID;
this.numPenn = numPenn;
this.numNick = numNick;
this.numDime = numDime;
this.numQuar = numQuar;
this.numHalf = numHalf;
this.numDol = numDol;
}
public void findEvenValue()
{ evenTotalSale = numPenn * penn.getValue() + numNick * nick.getValue() + numDime * dime.getValue()
+ numQuar * quar.getValue() + numHalf * half.getValue() + numDol * dol.getValue();
evenGrandTotal = evenGrandTotal + evenTotalSale;
}
public static double getEvenValue()
{
return evenTotalSale;
}
public void findOddValue()
{ oddTotalSale = numPenn * penn.getValue() + numNick * nick.getValue() + numDime * dime.getValue()
+ numQuar * quar.getValue() + numHalf * half.getValue() + numDol * dol.getValue();
oddGrandTotal = oddGrandTotal + oddTotalSale;
}
public static double getOddValue()
{
return oddTotalSale;
}
public static double getOddGrandValue()
{
return oddGrandTotal;
}
public static double getEvenGrandValue()
{
return evenGrandTotal;
}
public String getStoreID()
{
return storeID;
}
}
答案 0 :(得分：2)
您的evenStoreList为空。