I need to document the work!! Look at my Customer class. I have added JavaDocs for the class, each field and each method. I need do the same for the Sales class. In production, this is required as the standard documentation for every class.

Then generate the JavaDocs.

import java.io.*;

/**

* Customer class

* used to describe a Customer object

*

**/

public class Customer implements Comparable, Serializable {

// three private fields

/**

* used to hold the Customer's last name

*/

private String last;

/**

* used to hold the Customer's first name

*/

private String first;

/**

* a unique Customer id - generated by the program

*/

private int id;

/**

* a static variable used to make Customer numbers unique

*/

public static int num=200;

/**

* Full Constructor - used to creat a new customer

* Creates a new unique id for them

* @param custLast - Customer last name

* @param custFirst - Customer first name

*/

public Customer(String custLast, String custFirst)

{

last=custLast;

first=custFirst;

id = num;

num++;

}

/**

* empty constructor but still creates a unique id for them

*/

public Customer()

{

id = num;

num++;

}

/**

* used for reading back from a file where id is already set

* read the id - do not create a new one

* @param custLast - Customer last name

* @param custFirst - Customer first name

* @param idNum - Customer ID

*/

public Customer(String custLast, String custFirst, int idNum)

{

last=custLast;

first=custFirst;

id = idNum;

}

/**

* used to convert the object to a String output

* @see java.lang.Object#toString()

*/

public String toString()

{

return first + " " + last +",Id=" + id;

}

/**

* used for writing to a file

* @return String

*/

public String toStringF()

{

return first + "|" + last +"|" + id;

}

/**

* used to define how to compare two Customer objects

* @see java.lang.Comparable#compareTo(java.lang.Object)

*

**/

public int compareTo(Object o)

{

Customer c = (Customer) o;

if ((c.getLast() + c.getFirst()).compareTo( getLast() + getFirst())>0)

return 1;

else

return -1;

}

/**

* used to get the id

* @return int that is the customer number

*/

public static int getNum() {

return num;

}

/**

* used to get the first name

* @return a String that is the first name

*/

public String getFirst() {

return first;

}

/**

* used to get the id

* @return an int that is the id

*/

public int getId() {

return id;

}

/**

* used to get the last name

* @return a String that is the last name

*/

public String getLast() {

return last;

}

/**

* used to set the static next number value

* You could write the setter or make the variable public above

* @param int - the number to set

*/

public static void setNum(int i) {

num = i;

}

/**

* used to set the first name

* @param String - the first name

*/

public void setFirst(String string) {

first = string;

}

/**

* used to set the id

* @param int - that is the id

*/

public void setId(int i) {

id = i;

}

/**

* used to set the last name

* @param string that is the last name

*/

public void setLast(String string) {

last = string;

}

}

public class Sales {

private Customer cust;

private Inventory inv;

private int numBought;

public Sales()

{

}

public Sales (Customer c, Inventory i, int n)

{

cust = c;

inv = i;

numBought = n;

}

public String toString()

{

return cust.toString() + " bought " + numBought + " "+ inv.toStringC();

}

public Customer getCust() {

return cust;

}

public Inventory getInv() {

return inv;

}

public int getNumBought() {

return numBought;

}

public void setCust(Customer customer) {

cust = customer;

}

public void setInv(Inventory inventory) {

inv = inventory;

}

public void setNumBought(int i) {

numBought = i;

}

}

public class Inventory {

private String itemName;

private int numInStock;

private double cost;

private double salesPrice;

private double profitOnStock;

public Inventory()

{

}

public Inventory(String i, int n, double c, double s)

{

itemName=i;

numInStock = n;

cost = c;

salesPrice = s;

profit();

}

public String toString()

{

String s= "There are " + numInStock + " " + itemName + " in stock";

s = s + " Cost: " + cost + " SalesPrice: " + salesPrice + " Profit available: " + profitOnStock;

return s;

}

public String toStringC()

{

return itemName + " Cost:" + salesPrice;

}

public double costValue()

{

return numInStock * cost;

}

public double salesValue()

{

return numInStock * salesPrice;

}

public void profit()

{

double cost = costValue();

double sales = salesValue();

profitOnStock = sales - cost;

}

/**

* @return

*/

public double getCost() {

return cost;

}

/**

* @return

*/

public String getItemName() {

return itemName;

}

/**

* @return

*/

public int getNumInStock() {

return numInStock;

}

/**

* @return

*/

public double getSalesPrice() {

return salesPrice;

}

/**

* @param d

*/

public void setCost(double d) {

cost = d;

}

/**

* @param string

*/

public void setItemName(String string) {

itemName = string;

}

/**

* @param i

*/

public void setNumInStock(int i) {

numInStock = i;

}

/**

* @param d

*/

public void setSalesPrice(double d) {

salesPrice = d;

}

}

import java.util.*;

public class SalesDriver {

public static void main(String[] args) {

ArrayList cust = new ArrayList();

ArrayList inv = new ArrayList();

ArrayList sales = new ArrayList();

// load the data

loadData(cust, inv);

Scanner scan = new Scanner(System.in);

boolean more = true;

while (more) {

System.out.println("Let's make a sale ");

System.out.println("Customers:");

for (int i=0;i

System.out.println(i+1 + " " + cust.get(i).toString());

System.out.println(" Which customer number?");

int numC = scan.nextInt();

numC = numC-1;

System.out.println(" Inventory items:");

for (int i=0;i

System.out.println(i+1 + " " + inv.get(i).toString());

System.out.println(" Which inventory number?");

int numI = scan.nextInt();

numI = numI-1;

System.out.println (" How many would you like?");

int numBought = scan.nextInt();

if (numBought > inv.get(numI).getNumInStock())

{

System.out.println("There are not that many in stock. Sale cancelled!!");

}

else

{

System.out.println("Sold! The sale has been recorded");

Sales s = new Sales(cust.get(numC),inv.get(numI), numBought);

sales.add(s);

Inventory inven = inv.get(numI);

int newNum = inven.getNumInStock()-numBought;

inven.setNumInStock(newNum);

}

System.out.println (" More sales? (true/false)");

more = scan.nextBoolean();

}

printSales(sales);

}

public static void printSales(ArrayList s) {

for (int i=0;i

System.out.println(s.get(i).toString());

}

public static void loadData(ArrayList c, ArrayList inv) {

c.add(new Customer("Mouse", "Mickey"));

c.add(new Customer("Duck", "Donald"));

inv.add(new Inventory("Widgets", 100, 45.00, 55.00));

inv.add(new Inventory("Junk", 200, 13.35, 21.00));

}

}

The file needs to be saved as Sales.html