02. Ad Astra

package PogotovkaZaIzpit;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class AdAstra {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);


        List<Item> items = new ArrayList<>();

        String pattern = "(\\||\\#)[A-Za-z0-9 ]{1,}\\1[0-9]{2}\\/[0-9]{2}\\/[0-9]{2}\\1([0-9]{1,4}|10000)\\1";
        String input = scanner.nextLine();
        char[] splitters = { '#', '|' };
        Pattern p = Pattern.compile(pattern);
        Matcher m = p.matcher(input);

        while (m.find()) {
            String[] data = m.group().split("[#|]");
            Item item = new Item(data[1], data[2], Integer.parseInt(data[3]));
            items.add(item);
        }

        int totalCalories = items.stream().mapToInt(Item::getCalories).sum();
        int days = totalCalories / 2000;

        System.out.println("You have food to last you for: " + days + " days!");

        for (Item item : items) {
            System.out.println("Item: " + item.getName() + ", Best before: " + item.getBestBefore() + ", Nutrition: " + item.getCalories());
        }
    }

    static class Item {
        private String name;
        private String bestBefore;
        private int calories;

        public Item(String name, String bestBefore, int calories) {
            this.name = name;
            this.bestBefore = bestBefore;
            this.calories = calories;
        }

        public String getName() {
            return name;
        }

        public String getBestBefore() {
            return bestBefore;
        }

        public int getCalories() {
            return calories;
        }
    }
}