Аптека АПС

import java.io.InputStream;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.Scanner;

enum posNeg{
    NEG,
    POZ;

    public static posNeg fromInteger(int x){
        switch (x){
            case 0:
                return NEG;
            case 1:
                return POZ;
        }
        return null;
    }
}

class Product {
    private final String name;
    private final posNeg status;
    private final int price;
    private final int stock;

    public Product(String name, int status, int price, int stock) {
        this.name = name;
        this.status = posNeg.fromInteger(status);
        this.price = price;
        this.stock = stock;
    }

    public String toString(){
        return String.format("%s\n%s\n%d\n%d\n", this.name, this.status, this.price, this.stock);
    }

    public int getStock(){
        return this.stock;
    }

    public String getName(){
        return this.name;
    }

    public int getStatus() {
        return this.status == posNeg.NEG ? 0:1;
    }

    public int getPrice() {
        return price;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof Product)) return false;

        Product product = (Product) o;

        if (price != product.price) return false;
        if (stock != product.stock) return false;
        if (name != null ? !name.equals(product.name) : product.name != null) return false;
        return status == product.status;
    }

    @Override
    public int hashCode() {
        int value = 0;
        for (int i = 0; i < this.name.length(); i++) {
            value += 29 * i + this.name.charAt(i);
        }
        return (29 * (29 * value)) % 102780;
    }
}

class DrugStore{
    public final ArrayList<Product> products;

    DrugStore() {
        this.products = new ArrayList<>();
    }

    public int getOptimalSize(int x){
        return (int)(x / 0.75);
    }

    public void handleProductsAndCustomers(InputStream inputStream){
        Scanner scanner = new Scanner(inputStream);
        int numDrugs = scanner.nextInt();
        scanner.nextLine();

        Hashtable<String, Product> drugStoreTable = new Hashtable<>(getOptimalSize(numDrugs));

        for (int i = 0; i < numDrugs; i++) {
            String line = scanner.nextLine();
            String[] parts = line.split(" ");
            products.add(new Product(parts[0].toUpperCase(), Integer.parseInt(parts[1]), Integer.parseInt(parts[2]), Integer.parseInt(parts[3])));
            drugStoreTable.put(parts[0].toUpperCase(), products.get(i));
        }

        handleCustomers(scanner, drugStoreTable);
    }

    private void handleCustomers(Scanner scanner, Hashtable<String, Product> drugStoreTable) {
        String line = scanner.nextLine();
        while(!line.equals("KRAJ")) {
            int amountAskedFor = scanner.nextInt();
            scanner.nextLine(); //Consume line
            if (!drugStoreTable.containsKey(line.toUpperCase())) {
                System.out.println("Nema takov lek");
            }
            else {
                Product product = drugStoreTable.get(line.toUpperCase());
                if (amountAskedFor > product.getStock()) {
                    System.out.println(product + "Nema dovolno lekovi");
                }
                //Update product. . .
                else {
                    updateProduct(drugStoreTable, line, amountAskedFor, product);
                }
            }
            line = scanner.nextLine();
        }
    }

    private void updateProduct(Hashtable<String, Product> drugStoreTable, String line, int amountAskedFor, Product product) {
        Product updated = new Product(product.getName(), product.getStatus(), product.getPrice(), product.getStock() - amountAskedFor);
        drugStoreTable.remove(line.toUpperCase());
        drugStoreTable.put(product.getName().toUpperCase(), updated);
        System.out.println(product + "Napravena naracka");
    }
}

public class Apteka {
    //Runner
    public static void main(String[] args) {
        DrugStore drugStore = new DrugStore();
        drugStore.handleProductsAndCustomers(System.in);
    }
}