Ошибки в коде

import java.util.Scanner;
 
public class Main {
  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    System.out.println("Welcome to the bank calculator! Please choose an option: ");
    System.out.println("1. National Bank");
    System.out.println("2. Second Tier Bank");
 
    int choice = scanner.nextInt();
    Bank bank;
    if (choice == 1) {
      bank = new NationalBank();
    } else {
      bank = new SecondTierBank();
    }
 
    System.out.println("Please choose an option: ");
    System.out.println("1. Calculate deposit");
    System.out.println("2. Calculate credit");
 
    choice = scanner.nextInt();
    if (choice == 1) {
      System.out.println("Please enter the amount of money: ");
      double amount = scanner.nextDouble();
      System.out.println("Please enter the duration in months: ");
      int duration = scanner.nextInt();
      System.out.println("Please enter the client type (individual or legal entity): ");
      String clientType = scanner.next();
      System.out.println("The deposit reward is: " + bank.calculateDeposit(amount, duration, clientType));
    } else {
      System.out.println("Please enter the amount of money: ");
      double amount = scanner.nextDouble();
      System.out.println("Please enter the duration in months: ");
      int duration = scanner.nextInt();
      System.out.println("Please enter the client type (individual or legal entity): ");
      String clientType = scanner.next();
      System.out.println("The credit amount is: " + bank.calculateCredit(amount, duration, clientType));
    }
  }
}

public abstract class Bank {
  protected Calculator calculator;
 
  public Bank() {
    this.calculator = new Calculator();
  }
 
  public abstract double calculateDeposit(double amount, int duration, String clientType);
  public abstract double calculateCredit(double amount, int duration, String clientType);
}

public class NationalBank extends Bank {
  private static final double FIXED_BANK_REWARD = 0.01;
 
  @Override
  public double calculateDeposit(double amount, int duration, String clientType) {
    return calculator.calculateDeposit(amount, duration, clientType, FIXED_BANK_REWARD);
  }
 
  @Override
  public double calculateCredit(double amount, int duration, String clientType) {
    return calculator.calculateCredit(amount, duration, clientType);
  }
}

public class SecondTierBank extends NationalBank {
  private static final double FIXED_BANK_REWARD = 0.02;
  private static final double FIXED_INTEREST_RATE = 0.03;
 
  @Override
  public double calculateCredit(double amount, int duration, String clientType) {
    double credit = calculator.calculateCredit(amount, duration, clientType);
    return 0;
  }}