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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.

Variable Index

o cashOnHand
Current cash on hand
o log
Log into which cash amounts dispensed will be recorded

Constructor Index

o CashDispenser(Log)
Constructor

Method Index

o checkCashOnHand(Money)
See if there is enough cash on hand to satisfy a request
o dispenseCash(Money)
Dispense cash to a customer
o setInitialCash(Money)
Set the amount of cash initially on hand

Variables

o log 
 private Log log
Log into which cash amounts dispensed will be recorded

o cashOnHand 
 private Money cashOnHand
Current cash on hand

Constructors

o CashDispenser 
 public CashDispenser(Log log)
Constructor

Parameters:
log - the log in which to record dispensing cash

Methods

o setInitialCash 
 public void setInitialCash(Money initialCash)
Set the amount of cash initially on hand

Parameters:
initialCash - the amount of money in the dispenser
o 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
o 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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