// BalanceInquiry.java
// Represents a balance inquiry ATM transaction

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