Java Inventory part 4 problem

[blitz1989]

Hello all, I'm new to this forum and Java and having a alot of problems understanding this language. I am working on an invetory program part 4. The assignment requirements are listed but the reading has very little in it that helps can someone take a look at this code and point me in the right direction please. Thanks for any help that is offered.

//Modify the Inventory Program to use a GUI. The GUI should display the
//informationone product at a time, including the item number, the name of the
//product, the number of units in stock, the price of each unit, and the value of
//the inventory of that product. In addition, the GUI should display the value of
//the entire inventory, the additional attribute,and the restocking fee.

import java.util.Scanner; // program uses class Scanner
 
public class Invprogram4
{   
   public static void main(String args [])// main method begins application
     {
     Inventory theinventory = new Inventory();
     theinventory.printitem(1);
     theinventory.printitem(2);
     theinventory.printitem(3);
     theinventory.printitem(4);
     theinventory.printitem(5);
     theinventory.printitem(6);
 
     } //End main Method
 
 
}  //End class Invprogram4
 
class Inventory
{
   Stock[] stockarray = new Stock[10];//declares and sets up array
 
   public Inventory()
     {
     stockarray[1] = new Stock(1, "Hand Forged Forks", 5, 2.00);
     stockarray[2] = new Stock(2, "Hand Forged Spoons", 5, 2.00);
     stockarray[3] = new Stock(3, "Hand Forged Knives", 5, 3.00);
     stockarray[4] = new Stock(4, "Hand Forged Hinged Sporks", 10, 5.00);
     stockarray[5] = new Stock(5, "Throwing Knife Blanks", 5, 15.00);
     stockarray[6] = new Forkprongs(6, "Forkprongs", 5, 10.00, 2);
     }//close constructor
 
   public void printitem(int i)
     {    
     System.out.println("The Item number is " + stockarray[i].getproductUPC());
     System.out.println("The Product Name is " + stockarray[i].getproductName());
     System.out.println("The number of units in stock is " +     stockarray[i].getproductQuantity());
     System.out.println("The price per piece is " + stockarray[i].getproductPrice());
     System.out.println("The value of the inventory is " + stockarray[i].getStockValue());    
     }//close printitem method
 
 
   public void getTotalValue()  // total value getStockValue
     {
     int total = 0;
 
     for ( int i=1; i<6; i++ ) total += stockarray[i].getStockValue();
     System.out.printf("Total of stockarray elements %d\n", total);
     }
 
 
}//close class Inventory
 
class Stock
 
{
 
     private double productUPC; // Item number or Universial Product Code
     private String productName;//name of product
     private double productQuantity;//number of pieces in stock
     private double productPrice; //price per piece
     private double productValue; //price of all pieces in a UPC
 
   public Stock(double upc, String name, double quantity, double price)
     {
     //assign variables 
     productUPC = upc;
     productName = name;
     productQuantity = quantity;
     productPrice = price;
     }  //end constructor
 
//collection of set and get methods
 
   public void setproductUPC(double upc) 
     { productUPC = upc; }
 
   public double getproductUPC() 
     { return productUPC; }
 
   public void setproductName(String name) 
     { productName = name; }
 
   public String getproductName() 
     { return productName; }
 
   public void setproductQuantity(double quantity) 
     { productQuantity = quantity; }
 
   public double getproductQuantity() 
     { return productQuantity; }
 
   public void setproductPrice(double price) 
     { productPrice = price; }
 
   public double getproductPrice() 
     { return productPrice; }
 
   public double getStockValue()
     { return this.getproductPrice() * productQuantity; }
 
 
} //end class Stock
 
// This class defines types of forks named forkprongs it is a subclass of forks.  
//It is a stock, but has the extra feature of having prongs as a type and adds a 
//5% restocking fee.
 
   class Forkprongs extends Stock 
     { // starts subclass 
   private int productNumProngs;
 
   public Forkprongs(double UPC, String Name, double Quantity, double Price, 
     int NumProngs)
     {
     super(UPC, Name, Quantity, Price);
     productNumProngs = NumProngs;
     }
 
   public double getproductPrice() 
     {
     double productPrice = super.getproductPrice();
     return (productPrice * 1.05);
     }
 
 
// set and get method for subclass
   public void setproductNumProngs(int NumProngs) 
     { productNumProngs = NumProngs; }
 
   public int getproductNumProngs() 
     { return productNumProngs; }
 
}// end class Forkprongs
 

[blitz1989]

OK, I just came back to this and discovered my spelling was horrific. I apologize.

[JosAH]

Your current classes have set up a 'model' of your stock and a bit of a 'view'
that displays the entire inventory (btw, arrays start their index values at 0, not
at the value 1). Your last assignment wants you to replace your 'view' by a GUI
based view, not just the console.

For starters have a look at the JFrame class, you'll definitely need it and have
a look at the JTable class; it can display the 'records' of your inventory. There
isn't much of a 'controller' in your program because you don't want to, or have to
do much with your inventory, you just have to display it.

kind regards,

Jos