Trabalhoo COFRINHO DE MOEDAS EM JAVA prontoo?

import java.util.ArrayList;

import java.util.Scanner;

public class CoinTray {

  private ArrayList coins;

  private double totalValue;

  public CoinTray() {

    coins = new ArrayList<>();

    totalValue = 0.0;

  }

  public void addCoin(Coin coin) {

    coins.add(coin);

    totalValue += coin.getValue();

  }

  public void removeCoin(Coin coin) {

    if (coins.contains(coin)) {

      coins.remove(coin);

      totalValue -= coin.getValue();

    } else {

      System.out.println("Coin not found in tray.");

    }

  }

  public void listCoins() {

    for (Coin coin : coins) {

      System.out.println(coin);

    }

  }

  public double getTotalValue() {

    return totalValue;

  }

  public static void main(String[] args) {

    Scanner scanner = new Scanner(System.in);

    CoinTray tray = new CoinTray();

    while (true) {

      System.out.println("1. Add coin");

      System.out.println("2. Remove coin");

      System.out.println("3. List coins");

      System.out.println("4. Calculate total value");

      System.out.println("5. Exit");

      int choice = scanner.nextInt();

      if (choice == 1) {

        System.out.print("Enter coin value: ");

        double value = scanner.nextDouble();

        System.out.print("Enter coin country: ");

        String country = scanner.next();

        Coin coin = new Coin(value, country);

        tray.addCoin(coin);

      } else if (choice == 2) {

        System.out.print("Enter coin value: ");

        double value = scanner.nextDouble();

        System.out.print("Enter coin country: ");

        String country = scanner.next();

        Coin coin = new Coin(value, country);

        tray.removeCoin(coin);

      } else if (choice == 3) {

        tray.listCoins();

      } else if (choice == 4) {

        double totalValue = tray.getTotalValue();

        System.out.println("Total value: " + totalValue);

      } else if (choice == 5) {

        break;

      }

    }

  }

}

class Coin {

  private double value;

  private String country;

  public Coin(double value, String country) {

    this.value = value;

    this.country = country;

  }

  public double getValue() {

    return value;

  }

  public String getCountry() {

    return country;

  }

  @Override

  public String toString() {

    return "Coin value: " + value + " | Coin country: " + country;

  }

}