Writing Classes - Java Software Solutions: Foundations of Program Design - page 179

LISTING 4.4 continued

{
balance = balance + amount;
return balance;
}

//-----------------------------------------------------------------
// Withdraws the specified amount from the account and applies
// the fee. Returns the new balance.
//-----------------------------------------------------------------
public double withdraw ( double amount, double fee)
{
balance = balance - amount - fee;

return balance;
}

//-----------------------------------------------------------------
// Adds interest to the account and returns the new balance.
//-----------------------------------------------------------------
public double addInterest ()
{
balance += (balance * RATE);
return balance;
}

//-----------------------------------------------------------------
// Returns the current balance of the account.
//-----------------------------------------------------------------
public double getBalance ()
{
return balance;
}

//-----------------------------------------------------------------
// Returns a one-line description of the account as a string.
//-----------------------------------------------------------------
public String toString ()
{
NumberFormat fmt = NumberFormat.getCurrencyInstance();
return acctNumber + "\t" + name + "\t" + fmt.format(balance);
}
}