Hello, I am back again. Unfortunately, I have been trying to get this right for 3 days and it is not working. Although my program will build, compile, and run, it has many errors. Pbl tells me I have two dvd classes in one directory; I do not know how I did this and now I am at a complete loss as to what I have to do to fix this. Pllllleeeeeaaaaassseee help me!
This is the assignment: Modify the inventory program by creating a subclass of the product class that uses one additional unique feature (movie year) of the product you chose. In the subclass, create a method to calculate the value of the inventory of a product with the same name as the method previously created for the product class. The subclass method should also add a 5% restocking fee to the value of the inventory of that product. Modify the output to display this additional feature you have chosen and the restocking fee.
CODE
*/
package mydvdsjava;
import java.util.Scanner;
/** Inventory Program
* IT 215
* @author Tammy Fica
* June 13, 2008
*/
public class MyDvds {
//main method begins execution of Java application
/**
* @param args the command line arguments
*/
public static void main(String[] args)
{
//create and initialize a DVD object
DVD dvd = new DVD(); //invokes constructor
//create Scanner to obtain input from command window
Scanner input = new Scanner( System.in);
System.out.print("Enter product name, item number, number of units in stock, and price of each unit");
// prompt for user input
String title = "get this from input";
double stock = 0.0;
double price = 0.0;
double item = 0.0;
dvd = new DVD(title, price, stock, item);
System.out.println(dvd);
System.out.println("Title is: " + dvd.getTitle());
System.out.println("The item number is: " + dvd.getDVDNumber());
System.out.println("The number of units in stock is: " + dvd.getDVDStock());
System.out.println("The price of each unit is: " + dvd.getDVDPrice());
System.out.println("The value of inventory is: " + dvd.inventoryValue());
} //end method main
} //end classMyDvds
and this:
CODE
*/
package mydvdsjava;
/**
*
* @author Tammy
*/
/**
*
* @author Tammy
*/
class DVD extends Product {
// fields
private int movieyear;
private String dvdTitle;
private double dvdItem;
private double dvdStock;
private double dvdPrice;
public DVD(String title, double stock, double price, double item, int year)
{
super(productId, itemname, quantityOnHand, itemprice);
dvdTitle = title;
dvdItem = item;
dvdStock = stock;
dvdPrice = price;
} //end class DVD constructor
DVD() {
this ("Unspecified", 0.0, 10.0, 0.0);
}
public void setYear(int year)
{
}
public int getYear()
{
int DVDyear;
return DVDyear;
}
@Override
public double getItemValue()
{
return super.getItemValue() + 1.05;
}
public double getRestockingFee()
{
return super.getItemValue() + .05;
}
}
//set DVD name
public void setDVDTitle(String title)
{
dvdTitle = title;
}// end method setDVDTitle
//return DVD name
public String getDvdTitle(String title)
{
return dvdTitle;
} //end method get DvdTitle
//set item number
public void setDvdItem(double item)
{
dvdItem = item;
} //end method setDvdItem
//return item number
public double getDvdItem()
{
return dvdItem;
} //end method getDvdItem
//set number of units in stock
public void setDvdStock (double stock)
{
dvdStock = stock;
} //end method setDvdStock
//return number of units in stock
public double getDvdStock()
{
return dvdStock;
} //end method getDvdStock
//set price of each unit
public void setDvdPrice (double price)
{
dvdPrice = price;
} //end method setDvdPrice
//return price of each unit
public double getDvdPrice()
{
return dvdPrice;
} //end method getDvdPrice
//calculate inventory value
public double inventoryValue()
{
return dvdPrice * dvdStock;
} //end method inventoryValue
String getDVDNumber()
{
String DVDNumber = null;
return DVDNumber;
}
String getDVDPrice()
{
String DVDPrice = null;
return DVDPrice;
}
String getDVDStock()
{
String DVDStock = null;
return DVDStock;
}
String getTitle()
{
String DVDTitle = null;
return DVDTitle;
}
}
}
//end class DVD
and this:
CODE
*/
// Import class to format values into currency
import java.text.DecimalFormat;
/**
*
* @author Tammy
*/
public class Inventory {
// Set up an array 0f Products
int inventorySize = 30;
private Product items[] = new Product[inventorySize];
// Set formatter to format values into currency
DecimalFormat formatter = new DecimalFormat("$###,###.00");
private int InventorySize;
// Add a product to array, adds to first empty slot found
private void addProduct (Product Item) {
Product item = null;
for (int i = 0; i< inventorySize; i++){
if (items[i] == null) {
items[i] = item;
return;
}
}
}
/* Loop through array and add up the total value
* Add quantity on hand and multiply by its price
* Add the value to a running total
*/
public double getTotalInvValue(){
double sumOfInventory = 0.0;
for (Product item : items) {
// Make sure there is an item
if (item != null) {
sumOfInventory += item.getItemValue();
}
}
return sumOfInventory;
}
// Prints inventory list with; name, quantity, price, and total stock value for each item.
public void printInventory() {
System.out.println("Printing items in inventory...\n");
boolean hasItems = false;
for (Product item : items) {
if (item!= null) {
hasItems = true;
System.out.println("Inventory is currently empty.\n");
}
}
}
}
and finally this:
[code]
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Tammy
*/
class Product {
private String name;
private int quantity;
private double price;
private int productid = 0;
// Set the default state of object
public Product() {
this (0,"Unknown", 0, 0.00);
}
// Constructor to specify name, quantity, and price for items
public Product (int productId, String itemname, int quantityOnHand, double itemprice) {
productid = productId;
setName (itemname);
setQuantityOnHand (quantityOnHand);
setPrice (itemprice);
}
public void setName(String itemname) {
name = itemname;
}
// Sets quantity on hand and defaults to zero, if negative
public void setQuantityOnHand (int quantityOnHand) {
if (quantityOnHand > 0) {
quantity = quantityOnHand;
}
else { quantity = 0; }
}
// Set price of product and default to zero if negative
public void setPrice (double itemPrice) {
if (itemPrice > 0.00) {
price = itemPrice;
}
else { price = 0.00; }
}
// Get product name
public String getName() {
return name;
}
public int getQuantityOnHand() {
return quantity;
}
public double getPrice() {
return price;
}
// Calculate value of stock on this item
public double getItemValue() {
return (price * (double)quantity);
}
@Override
public String toString() {
return name + "-" + price;
}
}
[\code]
and the errors are all on the DVD code:
super(productId, itemname, quantityOnHand, itemprice);
cannot find symbol for variables, productId, itemname, quantityOnHand, itemprice.
next one:
this ("Unspecified", 0.0, 10.0, 0.0);
cannot find symbol, dvd constructor
and a bunch of class interface or enum expected starting at the line with:
public void setDVDTitle(String title)
22 Jun, 2008 - 04:42 PM
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