주문관리 프로그램 (큐)

문제 설명

• 프로그램 시작: 1.주문요청 2.주문처리 3.매출액 증액 4.종료
• input1: Food(foodName, price), Order(Food, amount){자료구조 추가} 생성
• input2: 자료구조에 있는 주문처리(주문된 내용 출력)
• input3: 주문처리된 메뉴에 대한 합계 출력

코드

Food.java

package kosa.order;

public class Food {
    private int idx;
    private String foodName;
    private int price;

    private int saleCount;

    public Food(){}
    public Food(String foodName, int price, int idx) {
        this.foodName = foodName;
        this.price = price;
        this.idx = idx;
    }

    public String getFoodName() {
        return foodName;
    }

    public void setFoodName(String foodName) {
        this.foodName = foodName;
    }

    public int getPrice() {
        return price;
    }

    public void setPrice(int price) {
        this.price = price;
    }

    public void setIdx(int idx){
        this.idx = idx;
    }

    public int getIdx(){
        return idx;
    }

    public void setSaleCount(int saleCount){
        this.saleCount += saleCount;
    }
    public int getSaleCount(){
        return saleCount;
    }

    @Override
    public String toString() {
        return idx + ". " +foodName + "-" + price + "원";
    }
}

---

Order.java

package kosa.order;

public class Order {
    private Food food;
    private int amount;
    private int orderPrice;

    public Order(){}

    public Order(Food food, int amount) {
        this.food = food;
        this.amount = amount;
        orderPrice = food.getPrice()*amount;
    }

    public Food getFood() {
        return food;
    }

    public void setFood(Food food) {
        this.food = food;
    }

    public int getAmount() {
        return amount;
    }

    public void setAmount(int amount) {
        this.amount = amount;
    }

    public int getOrderPrice(){
        return orderPrice;
    }

    @Override
    public String toString() {
        return "주문서 ----- 메뉴: " + food.getFoodName() + ", 가격: " + food.getPrice();
    }
}

---

OrderService.java

package kosa.order;

import java.util.*;

public class OrderService {
    private List<Food> foodList = new ArrayList<>();
    private LinkedList<Order> orderList = new LinkedList<>();
    private int sales;

    public OrderService(){}

    public void addFood(String foodName, int price, int idx){
        foodList.add(new Food(foodName, price, idx));
    }
    public List<Food> foods(){
        return foodList;
    }
    public Food findFood(int foodIdx){
        return foodList.get(foodIdx-1);
    }
    public void addOrder(int foodIdx, int amount){
        Food findFood = findFood(foodIdx);
        Order order = new Order(findFood, amount);
        orderList.offer(order);
        System.out.println("주문 - 메뉴: " + order.getFood().getFoodName() + ", " +
                "수량: " + order.getAmount());

        sales += order.getOrderPrice();
        findFood.setSaleCount(amount);

    }
    public LinkedList<Order> orders(){
        return orderList;
    }
    public void clearOrder(){
        Iterator<Order> iter = orderList.iterator();

        if((iter.hasNext())) {
            System.out.println("주문한 " + orderList.getFirst().getFood().getFoodName() + " " +
                    orderList.getFirst().getAmount() +"개 나왔습니다!");
            orderList.poll();
        }
        else System.out.println("현재 주문이 없습니다.");
    }

    public void getSales(){
        System.out.println("========== 매출전표 ==========");
        for (Food food : foodList) {
            System.out.println("- 메뉴명: " + food.getFoodName() + ", 수량: " +
                    food.getSaleCount() + "개, 합계: " + food.getPrice()*food.getSaleCount() +"원");
        }
        System.out.println("- 총 매출: " + sales +"원");
    }
}

---

Main.java

package kosa.order;

import java.util.List;
import java.util.Scanner;

public class Main {
    static Scanner sc = new Scanner(System.in);
    public static void main(String[] args) {
        OrderService service = new OrderService();
        service.addFood("눈꽃탕수육", 17000, 1);
        service.addFood("탄탄면", 9500, 2);
        service.addFood("차돌짬뽕", 11000, 3);
        service.addFood("짜장면", 6500, 4);

        while(true){
            System.out.println("----------------------------------------------------------------");
            System.out.print("1.주문요청     2.주문처리     3.매출총액     4.종료 \n번호를 입력하십시오: ");
            int menu = sc.nextInt();

            if((menu > 4 || menu < 0)){
                System.out.println("-----> !!올바른 입력이 아닙니다.");
                continue;
            }
            System.out.println();

            switch (menu){
                case 1:
                    System.out.println("[----- 메뉴판 -----]");
                    List<Food> foods = service.foods();
                    for (Food food : foods) System.out.println(food);
                    System.out.println();
                    System.out.print("-----> 주문할 메뉴 번호를 입력하십시오: ");
                    int foodIdx = sc.nextInt();
                    if(foodIdx > foods.size() || foodIdx < 0){
                        System.out.println("-----> !! 올바른 입력이 아닙니다.");
                        break;
                    }
                    System.out.print("-----> 수량을 입력하십시오: ");
                    int amount = sc.nextInt();
                    service.addOrder(foodIdx, amount);
                    break;

                case 2:
                    service.clearOrder();
                    break;

                case 3:
                    service.getSales();
                    break;

                case 4:
                    return;
            }
        }
    }
}

결과