java程序使用ArrayList时报错：Index 0 out of bounds for length 0，如何解决？

Question

【java报错：Index 0 out of bounds for length 0】运用ArrayList类就出现了这种情况(编译器为Eclipse)：

源码：

import java.util.Scanner;
import java.util.ArrayList;

public class Main {
    
    public static void main(String[] args) {
               String[] AllDishs_names = new String[] {"番茄炒蛋","酸辣土豆丝","红烧牛蛙","油淋生菜","虫草花排骨汤"};  //设置菜单
               int[] AllDishs_price = new int[] {15,10,35,10,35};       //设置单价
               ArrayList<Dish> AllDishs = new ArrayList<Dish>();
               int i = 0;
               for(String name : AllDishs_names) {
                   AllDishs.get(i).name = name;
                   i++;
               }
               int j = 0;
               for(int price : AllDishs_price) {
                   AllDishs.get(j).price = price;
                   j++;
               }                                            //13~21行设置菜品信息(包含菜名及其单价)
               Scanner input = new Scanner(System.in);
               Dish dish = new Dish();
               Menu menu = new Menu(AllDishs);         //将菜品信息放入菜单中
               Record record = new Record();
               Order order = new Order();
               dish.name = input.next();  //用户输入菜名
               int portion;   //份额
               while(dish.name != "end") {
                   if(menu.searchDish(dish.name) == false) {
                       System.out.println(dish.name + "does not exist");
                   }
                   else {
                       portion = input.nextInt();
                       record.setRecord(dish.name,portion);
                       order.setOnerecord(record.ADish, record.num);
                   }
                   dish.name = input.next();
               }
               System.out.print(order.getTotalprice());
           }
    }

class Dish{   //一道菜类
    String name;
    int price;
}

class Menu{   //菜单类
    ArrayList<Dish> alldishs = new ArrayList<Dish>();
    Menu(ArrayList<Dish> all){            //构造方法（带参构造）
        int i = 0;
        for(Dish d : all) {
            alldishs.get(i).name = d.name;
            alldishs.get(i).price = d.price;
            i++;
        }
    }
    void showMenu(){      //展示菜单界面
        for(int i = 0; i < alldishs.size();i++) {
            System.out.print(alldishs.get(i).name + " ");
            System.out.println(alldishs.get(i).price);
        }
    }
    boolean searchDish(String name1) {      //在菜单查找菜品
        for(Dish adish : alldishs) {
            if(adish.name.equals(name1)) 
            return true;
        }
        return false;
    }    
}

class Record{  //记录类
    Dish ADish = new Dish();     //记录菜名
    int num;    //记录份额
    void setRecord(String onedishname, int n) {   //写一条记录
        ADish.name = onedishname;
        num = n;
    }
    float getEachprice() {         //得到一条记录的价格
        return ADish.price*num;
    }
}

class Order{   //订单类
    ArrayList<Record> records = new ArrayList<Record>();
    static int n = 0;
    void setOnerecord(Dish dish, int num){      //将一条记录放入订单
        records.get(n).ADish = dish;
        records.get(n).num = num;
        n++;
    }
    float getTotalprice() {       //得到总价
        float sum = 0;
        for(int i = 0; i < records.size(); i++) {
            sum += records.get(i).getEachprice();
        }
        return sum;
    }
}

Help！QAQ

Answer 1

按目前你的逻辑，第10到19行应该改成这样：

        for (int i=0; i < AllDishs_names.length; i++){ // 确保AllDishs_names数组与AllDishs_price数组的length一样
            Dish dish = new Dish();
            dish.name = AllDishs_names[i];
            dish.price = AllDishs_price[i];
            AllDishs.add(dish);
        }