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Class atm.physical.CashDispenser
java.lang.Object
|
+----atm.physical.CashDispenser
- public class CashDispenser
- extends Object
Manager for the ATM's cash dispenser. In a real ATM, this would
manage a physical device; in this simulation, it uses classes
in package simulation to simulate the device.
-
cashOnHand
- Current cash on hand
-
log
- Log into which cash amounts dispensed will be recorded
-
CashDispenser(Log)
- Constructor
-
checkCashOnHand(Money)
- See if there is enough cash on hand to satisfy a request
-
dispenseCash(Money)
- Dispense cash to a customer
-
setInitialCash(Money)
- Set the amount of cash initially on hand
log
private Log log
- Log into which cash amounts dispensed will be recorded
cashOnHand
private Money cashOnHand
- Current cash on hand
CashDispenser
public CashDispenser(Log log)
- Constructor
- Parameters:
- log - the log in which to record dispensing cash
setInitialCash
public void setInitialCash(Money initialCash)
- Set the amount of cash initially on hand
- Parameters:
- initialCash - the amount of money in the dispenser
checkCashOnHand
public boolean checkCashOnHand(Money amount)
- See if there is enough cash on hand to satisfy a request
- Parameters:
- amount - the amount of cash the customer wants
- Returns:
- true if at least this amount of money is available
dispenseCash
public void dispenseCash(Money amount)
- Dispense cash to a customer
- Parameters:
- amount - the amount of cash to dispense
Precondition: amount is <= cash on hand
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