inventory system using an ArrayList.TXT

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

public class InventorySystem {

    public static void main(String[] args) {
        ArrayList<Item> inventory = new ArrayList<>();
        Scanner scanner = new Scanner(System.in);

        System.out.println("Welcome to the Inventory System");

        while (true) {
            printMenu();
            int choice = getUserChoice(scanner);

            switch (choice) {
                case 1:
                    addItem(inventory, scanner);
                    break;
                case 2:
                    viewInventory(inventory);
                    break;
                case 3:
                    removeItem(inventory, scanner);
                    break;
                case 4:
                    System.out.println("Exiting the Inventory System. Goodbye!");
                    scanner.close();
                    System.exit(0);
                    break;
                default:
                    System.out.println("Invalid choice. Please try again.");
            }
        }
    }

    private static void printMenu() {
        System.out.println("\nMenu:");
        System.out.println("1. Add Item to Inventory");
        System.out.println("2. View Inventory");
        System.out.println("3. Remove Item from Inventory");
        System.out.println("4. Exit");
    }

    private static int getUserChoice(Scanner scanner) {
        System.out.print("Enter your choice (1-4): ");
        return scanner.nextInt();
    }

    private static void addItem(ArrayList<Item> inventory, Scanner scanner) {
        scanner.nextLine(); // Consume the newline character
        System.out.print("Enter the item name: ");
        String itemName = scanner.nextLine();
        System.out.print("Enter the item quantity: ");
        int quantity = scanner.nextInt();

        Item newItem = new Item(itemName, quantity);
        inventory.add(newItem);

        System.out.println("Item added to the inventory!");
    }

    private static void viewInventory(ArrayList<Item> inventory) {
        if (inventory.isEmpty()) {
            System.out.println("Your inventory is empty. Add items to the list.");
        } else {
            System.out.println("Inventory:");
            for (Item item : inventory) {
                System.out.println("- " + item.getName() + " (Quantity: " + item.getQuantity() + ")");
            }
        }
    }

    private static void removeItem(ArrayList<Item> inventory, Scanner scanner) {
        if (inventory.isEmpty()) {
            System.out.println("Your inventory is empty. Nothing to remove.");
        } else {
            viewInventory(inventory);
            System.out.print("Enter the item number to remove: ");
            int itemNumber = scanner.nextInt();

            if (itemNumber >= 1 && itemNumber <= inventory.size()) {
                inventory.remove(itemNumber - 1);
                System.out.println("Item removed from the inventory!");
            } else {
                System.out.println("Invalid item number. Please enter a valid item.");
            }
        }
    }
}

class Item {
    private String name;
    private int quantity;

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

    public String getName() {
        return name;
    }

    public int getQuantity() {
        return quantity;
    }
}