class BankAccount {
	BankAccount(int id) {this.id = id;}
	public void deposit(int amount) {balance += amount;}
	public void withdraw(int amount) {balance -= amount;}
	
	public int getBalance() {return balance;}
	public int getId() {return id;}

	public String toString() {return "account #"+ id + " balance: $" + balance;}

	private int balance = 0;
	private int id;
}