Java数组索引超出范围？
有人能帮我解决下面发布的一个错误吗？程序正在运行，但在调用显示捐赠时，我收到了一个有关主屏幕的错误。我如何修复它，使其运行？这与语法错误有关吗？这是我第一次使用数组，所以我欢迎大家反馈我的好习惯。谢谢
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 6
at donations.processDonations(donations.java:78)
at donations.main(donations.java:33)
import java.util.Scanner; //needed for input
public class donations {
static double[] cashDonations = new double[6]; // stores the cash donations
// from 6 sites
static double[] lbsFood = new double[6]; // stores the pounds of food
// donated from 6 sites
static String[] siteName = new String[6]; // stores the names of the 6 sites
static String bestSiteCash = " "; // stores the site name with the highest
// cash donation
static String bestSiteFood = " "; // stores the site name with the highest
// food donation
static double totalCash = 0; // stores the total cash collected for all
// sites
static double totalFood = 0; // stores the total food pounds collected for
// all sites
static double maxFood = 0; // store the highest food collection
static double maxCash = 0; // stores the highest cash collection
public static void main(String[] args) {
Scanner input = new Scanner(System.in); // needed for input
String anotherCourse = "yes"; // variable to control running program
// again
do {
getDonations();
processDonations();
displayDonations();
// This code ends the do while to run again
System.out.print("Enter yes if you want to run again: ");
anotherCourse = input.next();
input.nextLine(); // causes skipping issue to fix
System.out.print("\n\n\n");
} while (anotherCourse.equalsIgnoreCase("yes"));
} // end of main
public static void getDonations() {
Scanner input = new Scanner(System.in); // needed for input
// Prompt user for site info
for (int i = 0; i < 6; i++) {
System.out.println("Enter site " + (i + 1) + " name: ");
siteName[i] = input.next();
System.out.println("Enter cash donation(USD) for " + siteName[i]
+ ": ");
cashDonations[i] = input.nextDouble();
// double [] cashDonations = new double [6]; You have this already
// at the top
// int i;
// for (i = 0 ; i < 6 ; i++)
// cashDonations[i] = input.nextDouble();
// double [] lbsFood = new double [6];
System.out.println("Enter food donation(lbs.) for " + siteName[i]
+ ": ");
lbsFood[i] = input.nextDouble();
}
}
public static void processDonations() {
totalCash = 0;
totalFood = 0;
maxCash = cashDonations[0];
maxFood = lbsFood[0];
totalCash = cashDonations[1] + cashDonations[2] + cashDonations[3]
+ cashDonations[4] + cashDonations[5] + cashDonations[6];
totalFood = lbsFood[1] + lbsFood[1] + lbsFood[2] + lbsFood[3]
+ lbsFood[4] + lbsFood[5] + lbsFood[6];
}
public static void displayDonations() {
System.out.print("Total Cash Donations are " + totalCash);
System.out.print("Total Food Donations are " + totalFood);
System.out.print("Donation totals for " + siteName[1]);
System.out.print("Total cash: " + cashDonations[1]);
System.out.print("Food donations " +lbsFood[1]);
System.out.println();
System.out.print("Donation totals for " + siteName[2]);
System.out.print("Total cash: " + cashDonations[2]);
System.out.print("Food donations " +lbsFood[2]);
System.out.println();
System.out.print("Donation totals for " + siteName[3]);
System.out.print("Total cash: " + cashDonations[3]);
System.out.print("Food donations " +lbsFood[3]);
System.out.println();
System.out.print("Donation totals for " + siteName[4]);
System.out.print("Total cash: " + cashDonations[4]);
System.out.print("Food donations " +lbsFood[4]);
System.out.println();
System.out.print("Donation totals for " + siteName[5]);
System.out.print("Total cash: " + cashDonations[5]);
System.out.print("Food donations " +lbsFood[5]);
System.out.println();
System.out.print("Donation totals for " + siteName[6]);
System.out.print("Total cash: " + cashDonations[6]);
System.out.print("Food donations " +lbsFood[6]);
System.out.println();
}// end of displayDonations()
}// end of class
# 1 楼答案
代码中有几个地方直接引用代码中的索引
6。以下是一些：但是所有数组都声明为长度
6Arrays in Java are 0-based，所以长度为
n的数组只有0到n - 1的索引，或者这里是0到5的索引。如果需要索引6，请将数组长度设置为7# 2 楼答案
我注意到你犯了一个常见的“一个接一个”的错误\_(ツ)_/“'
在这里，您正确地声明了3个大小为6的数组：
虽然每个数组中确实有6个元素，但第一个元素被称为0
[0]、[1]、[2]、[3]、[4]、[5]
在代码中，您调用了不存在的第七个元素“[6]”：
要修复它，只需将元素从0设置为5：
这是一个容易犯的错误，因为我们被教导，0在我们的一生中毫无价值
继续编程，不要放弃
# 3 楼答案
这是一个有6个空格的数组，对吗。然而：
在这里，您将访问7个空间。0,1,2,3,4,5和6