public class BalanceInquiry extends Transaction
{
    // BalanceInquiry constructor
    public BalanceInquiry(int userAccountNumber, Screen atmScreen, BankDatabase atmBankDatabase){
        super(userAccountNumber, atmScreen, atmBankDatabase);
    }   // end BalanceInquiry constructor

    // performs the transaction
    @Override
    public void execute(){
        // get references to bank database and screen
        BankDatabase bankDatabase = getBankDatabase();
        Screen screen = getScreen();

        // get the available balance for the account involved
        double availableBalance = bankDatabase.getAvailableBalance(getAccountNumber());

        // get the total balance for the account involved
        double totalBalance = bankDatabase.getTotalBalance(getAccountNumber());

        // display the balance information on the screen
        screen.displayMessageLine("\nBalance Information : ");
        screen.displayMessage(" - Available Balance : ");
        screen.displayDollarAmount(availableBalance);
        screen.displayMessage("\n - Total Balance : ");
        screen.displayDollarAmount(totalBalance);
        screen.displayMessageLine("");
    }   // end method execute
}   // end class BalanceInquiry