CashRegisterTester.java /** This program tests the CashRegister class. */ public class CashRegisterTester { public static void main(String[]

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CashRegisterTester.java

/**
This program tests the CashRegister class.
*/
public class CashRegisterTester
{
public static void main(String[] args)
{
final double NICKEL_VALUE = 0.05;
final double DIME_VALUE = 0.1;
final double QUARTER_VALUE = 0.25;

CashRegister myRegister = new CashRegister();
myRegister.recordPurchase(0.82);
myRegister.enterPayment(3, new Coin(QUARTER_VALUE, "quarter"));
myRegister.enterPayment(2, new Coin(NICKEL_VALUE, "nickel"));

double myChange = myRegister.giveChange();
System.out.printf("Change: %.2f\n", myChange);
System.out.println("Expected:\nChange: 0.03");
}
}

CashRegister.java (has todo)

/**
A cash register totals up sales of several items purchased by a customer and computes change due.
See class CashRegisterTester to help you understand the methods in this class
*/
public class CashRegister
{
private double totalOfItemsPurchased;
private double payment;

/**
Constructs a cash register with no money in it.
*/
public CashRegister()
{
totalOfItemsPurchased = 0;
payment = 0;
}

/**
Records the sale of another item.
@param itemPrice the price of the item
*/
public void recordPurchase(double itemPrice)
{
//-----------Start below here. To do: approximate lines of code = 2
// add the price of the item to the total of items purchased so far

//-----------------End here. Please do not remove this comment. Reminder: no changes outside the todo regions.
}

/**
Enters the payment received from the customer; should be called once
for each coin type
@param coinCount the number of coins (e.g. 3 dimes)
@param coinType the type of the coins in the payment (e.g. value of a coin)
*/
public void enterPayment(int coinCount, Coin coinType)
{
//-----------Start below here. To do: approximate lines of code = 1
// add to the payment variable the number of coins * the value of the given coins
// Hint: see class Coin

//-----------------End here. Please do not remove this comment. Reminder: no changes outside the todo regions.
}

/**
Computes the change due and resets the cash register for the next customer.
@return the change due to the customer
*/
public double giveChange()
{
//-----------Start below here. To do: approximate lines of code = 4
// compute the change to return to the customer , then reset payment and totalOfItemsPurchased to 0 then return the change

//-----------------End here. Please do not remove this comment. Reminder: no changes outside the todo regions.
}
}

Coin.java

/**
A coin with a monetary value.
*/
public class Coin
{
private double value;
private String name;

/**
Constructs a coin.
@param aValue the monetary value of the coin.
@param aName the name of the coin
*/
public Coin(double aValue, String aName)
{
value = aValue;
name = aName;
}

/**
Gets the coin value.
@return the value
*/
public double getValue()
{
return value;
}

/**
Gets the coin name.
@return the name
*/
public String getName()
{
return name;
}
}