Inventory Part 4 - Almost done!!!

**ladykrimson** · 11-09-2010, 05:31 PM

Hi there.

So I am so close to finished on this part, but I am having an issue. Here is the code:

Java Code:

import java.util.*;
import javax.swing.*;

public class InventoryGui extends javax.swing.JFrame {

    /** Creates new form JF1 */
    public InventoryGui() {
        initComponents();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        inventoryGuiPanel = new javax.swing.JPanel();
        inventoryTotalWindow = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        inventoryListWindow = new javax.swing.JTextArea();
        totalInventoryWindowLabel = new javax.swing.JLabel();

                String sOutPut = "";

        BlurayDVD[] blu = new BlurayDVD[6];

    	blu[0] = new BlurayDVD("Independence Day", 6, 5.23, 1, "Standard DVD");
        System.out.println(blu);

        blu[1] = new BlurayDVD("X-Men", 8, 4.73, 2, "Standard DVD");
        System.out.println(blu);

        blu[2] = new BlurayDVD("Jurassic Park", 3, 6.01, 3, "Standard DVD");
        System.out.println(blu);

        blu[3] = new BlurayDVD ("My Cousin Vinny", 4, 3.15, 4, "Standard DVD");
        System.out.println(blu);

        blu[4] = new BlurayDVD ("The Mist", 3, 6.58, 5, "BluRay DVD");
        System.out.println(blu);

        blu[5] = new BlurayDVD ("Independence DaySE", 4, 7.81, 6, "BluRay DVD");
        System.out.println(blu);


	ArrayList<BlurayDVD> bluList = new ArrayList<BlurayDVD>();

         BlurayDVD b0 = new BlurayDVD ("The Mist", 3, 6.58, 5, "Standard DVD");
         BlurayDVD b1 = new BlurayDVD ("Independence Day", 4, 7.81, 6, "BluRay DVD");
         BlurayDVD b2 = new BlurayDVD ("X-Men", 8, 4.73, 2,"BluRay DVD");
         BlurayDVD b3 = new BlurayDVD ("Jurassic Park", 3, 6.01, 3,"BluRay DVD");
         BlurayDVD b4 = new BlurayDVD ("My Cousin Vinny", 4, 3.15, 4, "Standard DVD");
         BlurayDVD b5 = new BlurayDVD("Independence DaySE", 4, 7.81, 6, "BluRay DVD");

          bluList.add(b0);
          bluList.add(b1);
          bluList.add(b2);
          bluList.add(b3);
          bluList.add(b4);
          bluList.add(b5);

              Collections.sort(bluList, new Comparator<BlurayDVD>()
              {
                    public int compare(BlurayDVD o1, BlurayDVD o2)
                    {
                        BlurayDVD p1 = (BlurayDVD) o1;
                        BlurayDVD p2 = (BlurayDVD) o2;
                        return p1.getDvdTitle().compareToIgnoreCase(p2.getDvdTitle());
                    }

              });

            [B]  for (int i = 0; i < bluList._______; i++)
            {

                 sOutPut += String.format(" %d\t%18s\t%d\t $%.2f\t$%.2f\t$%.2f\t%s\n", bluList(i).dvdItem, bluList(i).getDvdTitle(),  bluList(i).getDvdStock(), bluList(i).getDvdPrice(), bluList(i).value(), bluList(i).getRestockFee(), bluList(i).getCategory());
[/B]
                 System.out.printf(" %d\t%18s\t%d\t $%.2f\t$%.2f\t$%.2f\t%s\n", blu[i].dvdItem, blu[i].getDvdTitle(),  blu[i].getDvdStock(), blu[i].getDvdPrice(),  blu[i].value(), blu[i].getRestockFee(), blu[i].getCategory());
                 System.out.println(); // prints a blank line
            }

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("DVD Inventory");
        setBackground(new java.awt.Color(255, 255, 255));
        setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowActivated(java.awt.event.WindowEvent evt) {
                formWindowActivated(evt);
            }
        });
        getContentPane().setLayout(new javax.swing.BoxLayout(getContentPane(), javax.swing.BoxLayout.LINE_AXIS));

        inventoryTotalWindow.setBackground(new java.awt.Color(255, 255, 255));
        inventoryTotalWindow.setEditable(false);

        inventoryTotalWindow.setText(String.format("$%.2f",b1.getTotal(blu)));

        inventoryListWindow.setColumns(20);
        inventoryListWindow.setRows(5);
        jScrollPane1.setViewportView(inventoryListWindow);

        inventoryListWindow.setText(sOutPut);

        totalInventoryWindowLabel.setFont(new java.awt.Font("Verdana", 1, 13)); // NOI18N
        totalInventoryWindowLabel.setText("The total value of the inventory is");

        javax.swing.GroupLayout inventoryGuiPanelLayout = new javax.swing.GroupLayout(inventoryGuiPanel);
        inventoryGuiPanel.setLayout(inventoryGuiPanelLayout);
        inventoryGuiPanelLayout.setHorizontalGroup(
            inventoryGuiPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(inventoryGuiPanelLayout.createSequentialGroup()
                .addContainerGap()
                .addGroup(inventoryGuiPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 553, Short.MAX_VALUE)
                    .addGroup(inventoryGuiPanelLayout.createSequentialGroup()
                        .addComponent(totalInventoryWindowLabel, javax.swing.GroupLayout.PREFERRED_SIZE, 249, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(inventoryTotalWindow, javax.swing.GroupLayout.PREFERRED_SIZE, 127, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap())
        );
        inventoryGuiPanelLayout.setVerticalGroup(
            inventoryGuiPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(inventoryGuiPanelLayout.createSequentialGroup()
                .addGap(21, 21, 21)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 249, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(28, 28, 28)
                .addGroup(inventoryGuiPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(inventoryTotalWindow, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(totalInventoryWindowLabel))
                .addContainerGap(29, Short.MAX_VALUE))
        );

        getContentPane().add(inventoryGuiPanel);

        pack();
    }// </editor-fold>

    private void formWindowActivated(java.awt.event.WindowEvent evt) {
        // TODO add your handling code here:
    }

    /**
    * @param args the command line arguments
    */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new InventoryGui().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify
    private javax.swing.JPanel inventoryGuiPanel;
    private javax.swing.JTextArea inventoryListWindow;
    private javax.swing.JTextField inventoryTotalWindow;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JLabel totalInventoryWindowLabel;
    // End of variables declaration

}

class DVD
{
    String dvdTitle;
    int dvdStock;
    double dvdPrice;
    int dvdItem;
    double titleValue;
    double totalValue;
    String dvdCategory;

    public DVD(String title, int stock, double price, int item, String category)
    {

        dvdTitle = title;
        dvdStock = stock;
        dvdPrice = price;
        dvdItem  = item;
        dvdCategory = category;
    } //end five-argument constructor

	// set DVD title
    public void setDvdTitle(String title)
    {
        dvdTitle = title;
    } //end method  setDvdTitle

    //return DVD title
    public String getDvdTitle()
    {
        return dvdTitle;
    } //end method getDvdTitle

    //set number if DVDs in stock
    public void setDvdStock(int stock)
    {
        dvdStock = stock;
    } //end method setDvdStock

    //retrieve the number of DVD's in stock
    public int getDvdStock()
    {
        return dvdStock;
    } //end method getDvdStock

    // set the price of the title
    public void setDvdPrice(double price)
    {
        dvdPrice = price;
    } //end method setDvdPrice

    //retrieve the price of this title
    public double getDvdPrice()
    {
        return dvdPrice;
    } //end method getDvdPrice

    // set the DVD item number
    public void setDvdItem(int item)
    {
        dvdItem = item;
    } //end method setDvdItem

    //retrieve the DVD item number
    public int getDvdItem()
    {
        return dvdItem;
    } //end  method getDvdItem

    //	calculate inventory value for each title and cumulatively calculate the total value of the entire inventory
    public double value()
    {
        titleValue = dvdPrice * dvdStock;
        totalValue = titleValue + totalValue;
        return titleValue;

    } //end method value

   public  double getTotal(BlurayDVD[] blu)
    {
         for (int i = 0; i < blu.length; i++)
	{
		totalValue += blu[i].value();
	}
	return totalValue;
    } // end method getTotal


} //end class DVD

// subclass BluRayDVD
class BlurayDVD extends DVD
{
	// adds one field
	double restockFee;

	// constructor for BlurayDVD
	public BlurayDVD(String title, int stock, double price, int item, String category)
	{
		// add these from superclass DVD
		super(title, stock, price, item, category);
	}

	// method to set the category
	public void setCategory(String category)
	{
		dvdCategory = category;
	} // end method setCategory

	// method to retrieve the category
	public String getCategory()
	{
		return dvdCategory;
	} // end method getCategory

    //	calculate inventory value for each title and cumulatively calculate the total value of the entire inventory
    @Override
    public double value()
    {
    	double initialTitleValue;

        initialTitleValue = (dvdPrice * dvdStock); // initial value
        restockFee = (initialTitleValue * .05); // calculate restocking fee
        titleValue = initialTitleValue + restockFee; // add restock fee to the initial value
        totalValue = titleValue + totalValue; // add to the cumulative value
        return titleValue;
    } // end method value

    // retrieve the restocking fee
    public double getRestockFee()
    {
    	return restockFee;
    } // end method getRestockFee

} // end subclass BlurayDVD

The part that I made in bold font is the problem. I am trying to get the program to display the bluList sorted in alphabetical order. I have the sorting all coded out, but now I am unsure what to put in the "for" loop since "length" does not work.

**StormyWaters** · 11-09-2010, 05:40 PM

Check out the API for the List class. There should be a method in there that is similar to length for arrays.
List (Java Platform SE 6)

**Eranga** · 11-09-2010, 05:40 PM

Did you read the API?

size() ???

**ladykrimson** · 11-09-2010, 06:03 PM

Thank you. Here was the problem:

When I used size, I would get errors for each of the items.

Java Code:

              for (int i = 0; i < bluList.size(); i++)
            {

                 sOutPut += String.format(" %d\t%18s\t%d\t $%.2f\t$%.2f\t$%.2f\t%s\n", [B][COLOR="Red"]bluList[/COLOR][/B](i).dvdItem, [B][COLOR="Red"]bluList[/COLOR][/B](i).getDvdTitle(),  [B][COLOR="Red"]bluList[/COLOR][/B](i).getDvdStock(), [B][COLOR="Red"]bluList[/COLOR][/B](i).getDvdPrice(), [B][COLOR="Red"]bluList[/COLOR][/B](i).value(), [B][COLOR="Red"]bluList[/COLOR][/B](i).getRestockFee(), [B][COLOR="Red"]bluList[/COLOR][/B](i).getCategory());

                 System.out.printf(" %d\t%18s\t%d\t $%.2f\t$%.2f\t$%.2f\t%s\n", blu[i].dvdItem, blu[i].getDvdTitle(),  blu[i].getDvdStock(), blu[i].getDvdPrice(),  blu[i].value(), blu[i].getRestockFee(), blu[i].getCategory());
                 System.out.println(); // prints a blank line
            }

I had to insert the "get" between each one.

Java Code:

              for (int i = 0; i < bluList.size(); i++)
            {
                 sOutPut += String.format(" %d\t%18s\t%d\t $%.2f\t$%.2f\t$%.2f\t%s\n", bluList.get(i).dvdItem, bluList.get(i).getDvdTitle(),  bluList.get(i).getDvdStock(), bluList.get(i).getDvdPrice(), bluList.get(i).value(), bluList.get(i).getRestockFee(), bluList.get(i).getCategory());

                 System.out.printf(" %d\t%18s\t%d\t $%.2f\t$%.2f\t$%.2f\t%s\n", blu[i].dvdItem, blu[i].getDvdTitle(),  blu[i].getDvdStock(), blu[i].getDvdPrice(),  blu[i].value(), blu[i].getRestockFee(), blu[i].getCategory());
                 System.out.println(); // prints a blank line
            }

I am having one more minor issue. I specifically coded the output so that each of the titles would be 18 character spaces long. It does this for the first four items, but the last two items won't display that way.

Any ideas why?