import java.util.List;
import java.util.ArrayList;

public abstract class BankAccount 
{
  
    protected double balance;
    List customerList;
    public static final int MAX_OWNER = 2;
    protected static int numOwner;
   
        
    //* creates a bank account with zero balance
    public BankAccount() 
    {
        this.balance = 0;
    }
    
    //* creates a bank account with a customer and an initial balance
    public BankAccount(Customer c, double balance)
    {
        
        this.balance = balance;
    }
    
    //* adds customers
    public void addPerson(Customer customer)
    {
    	// create new customer with checking account, balance 0
    	Customer c1 = new Customer("Kellie","Smith");
    	CheckingAccount ca1 = new CheckingAccount(c1, 0.0);
    	// create new customer with saving account, balance 0
    	Customer c2 = new Customer("Tom","Brown");
    	SavingAccount sa1 = new SavingAccount(s1, 0.0);
    }
    
	//* returns the number of customers on an account
    public int getNumCustomer()
    {
    	return customerList.size();
    }
    
    //* returns 
    public getCustomerList()
    {
    	
    }
    
    //* returns the account number
    public getAccountNumber()
    {
    	return accountNumber;
    }

    //* Deposits money into the bank account
    public void deposit(double amount)
    {
    	this.balance += amount;
    }
    
    //* Withdraws money from a bank account    
    public abstract void withdraw(double amount);
    {
    	this.balance -= amount;
    }
    
    
    //* returns the current balance of the bank account
    public double getBalance() 
    {
        return this.balance;
    }
    

   	//* obtains information about customers in the bank account
    public String toString() {
        return "BankAccount with balance: $" + this.balance;
    }
    
}