Help with Errors in Inventory Program

[ljk8950]

I hope someone can help me with this. I have the following problem due by Sunday, August 10. I am getting 13 errors when I try to compile the program. Most of the errors are related to the buttons I am trying to add. I think what is wrong with one button is the same thing that is wrong will all the buttons. I cannot seem to figure out what is wrong. Please help me solve the errors in this program. Thank you! The errors and my program are listed below.


Assignment
Modify the Inventory Program by adding a button to the GUI that allows the user to move to the first item, the previous item, the next item, and the last item in the inventory. If the first item is displayed and the user clicks on the Previous button, the last item should display. If the last item is displayed and the user clicks on the Next button, the first item should display. Add a company logo to the GUI using Java graphics classes.

Errors
InventoryProgramPart5.java:235: totalValue is already defined in RunInv
JTextField totalValue = new JTextField(20);
^
InventoryProgramPart5.java:196: RunInv is not abstract and does not override abs
tract method actionPerformed(java.awt.event.ActionEvent) in java.awt.event.Actio
nListener
class RunInv extends JFrame implements ActionListener
^
InventoryProgramPart5.java:242: cannot find symbol
symbol : method makeTheDataItems()
location: class RunInv
makeTheDataItems();
^
InventoryProgramPart5.java:266: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton first = makeButton( "First" );
^
InventoryProgramPart5.java:267: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton next = makeButton( "Next" );
^
InventoryProgramPart5.java:268: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton previous = makeButton( "Previous" );
^
InventoryProgramPart5.java:269: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton last = makeButton( "Last" );
^
InventoryProgramPart5.java:270: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton exit = makeButton( "Exit" );
^
InventoryProgramPart5.java:273: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton add = makeButton( "Add" );
^
InventoryProgramPart5.java:274: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton delete = makeButton( "Delete" );
^
InventoryProgramPart5.java:275: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton modify = makeButton( "Modify" );
^
InventoryProgramPart5.java:276: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton save = makeButton( "Save" );
^
InventoryProgramPart5.java:277: cannot find symbol
symbol : method makeButton(java.lang.String)
location: class RunInv
JButton find = makeButton( "Find" );
^
13 errors

// CheckPoint:  InventoryProgramPart5.java
// Week 8
// This program calculates inventory value

import java.util.Arrays;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class InventoryProgramPart5
{
     public static void main( String args[] )
     {
          double restockingFee = 0.05;
          manufacturer[] inventory = new manufacturer[5]; // array of 5

          inventory[0] = new manufacturer
               ( "notepads", restockingFee, "4000", "Ampad", 60, 2.75 );
          inventory[1] = new manufacturer
               ( "pencils", restockingFee, "5000", "Bic", 75, 1.25 );
          inventory[2] = new manufacturer
               ( "folders", restockingFee, "2000", "3M", 30, 4.75 );
          inventory[3] = new manufacturer
               ( "envelopes", restockingFee, "1000", "Universal", 15, 5.25 );
          inventory[4] = new manufacturer
               ( "markers", restockingFee, "3000", "Sanford", 45, 3.50 );

          manufacturer temp[] = new manufacturer[1];
      
               for( int j = 0; j < inventory.length - 1; j++ )
               {
                    for( int k = 0; k < inventory.length - 1; k++ )
                    {
                         if( inventory[k].getItemName().compareToIgnoreCase
                              ( inventory[k+1].getItemName() ) > 0 )
                         {
                              temp[0] = inventory[k];
                              inventory[k] = inventory[k+1];
                              inventory[k+1] = temp[0];
                         } // end if
                    } // end for    
               } // end for

               javax.swing.JTextArea ta = new javax.swing.JTextArea( 10, 25 );
               for( int j = 0; j < inventory.length; j++ )
               {

               // System.out.println( inventory[j].toString() );<-----------------

                    ta.append( inventory[j].toString()+"\n" );
               } // end for

          // System.out.printf( "Total value of all inventory = $%.2f",
          // Inventory.etTotalValueOfAllInventory( inventory ) );
          // return; // <------------------above line and this line
          ta.append("Total value of all inventory = "+product.getTotalValueOfAllInventory(inventory));
          javax.swing.JFrame frame = new javax.swing.JFrame();
          frame.getContentPane().add( new javax.swing.JScrollPane(ta) );
          frame.pack();
          frame.setLocationRelativeTo( null );
          frame.setDefaultCloseOperation( javax.swing.JFrame.EXIT_ON_CLOSE );
          frame.setVisible( true );

     } // end main

} // end class InventoryProgramPart5

// The product class
class product
{
     String productNumber;
     String name;
     int numberOfUnits;
     double pricePerUnit;

     // create a new instance of Inventory
     // main constructor for the class
     product( String Item_Number, String Item_Name, int Items_in_Stock, double Item_Price )
     {
          productNumber = Item_Number;
          name = Item_Name;
          numberOfUnits = Items_in_Stock;
          pricePerUnit = Item_Price;
     } // end constructor

     // sets the product name
     public void setItemName( String Item_Name )
     {
          name = Item_Name;
     }

     // sets the product number
     public void setItemNumber( String Item_Number )
     {
          productNumber = Item_Number;
     }

     // sets the number of units in stock
     public void setItemsInStock( int Items_in_Stock )
     {
          numberOfUnits = Items_in_Stock;
     }

     // sets the price of the product
     public void setItemPrice( double Item_Price )
     {
          pricePerUnit = Item_Price;
     }

     // returns product name
     public String getItemName()
     {
          return name;
     }

     // returns product number
     public String getItemNumber()
     {
          return productNumber;
     }

     // returns units in stock
     public int getItemsInStock()
     {
          return numberOfUnits;
     }

     // returns product price
     public double getItemPrice()
     {
          return pricePerUnit;
     }

     // returns the total value of inventory
     public double getInventoryValue()
     {
          return pricePerUnit * numberOfUnits;
     }

     public static double getTotalValueOfAllInventory( product[] inv )
     {
          double tot = 0.0;
          for( int i = 0; i < inv.length; i++ )
          {
               tot += inv[i].getInventoryValue();
          }
          return tot;
     }

     public String toString()
     {
          StringBuffer sb = new StringBuffer();
          sb.append( "Product Name:  \t" ).append( name ).append( "\n" );
          sb.append( "Product Number:  \t" ).append( productNumber ).append( "\n" );
          sb.append( "Units in Stock:       \t" ).append( numberOfUnits ).append( "\n" );
          sb.append( "Unit Price:            \t" ).append( String.format( "$%.2f%n", pricePerUnit ) );
          sb.append( "Inventory Value:  \t" ).append(String.format("$%.2f%n", this.getInventoryValue())); 
               return sb.toString();
     } // end toString
} // end class product

class manufacturer extends product
{ 
     // manufacturer of product
     String manufacturer;

     // percentage added to base price as restocking fee
     double restockingFee;

     // actual inventory value will be the base inventory value plus
     // the base inventory value times this amount ( value + ( value * restockingFee ) )
     public manufacturer( String Item_Name, double restockingFee, String Item_Number,
          String manufacturer, int Items_in_Stock, double Item_Price )

     {
          super( Item_Number, Item_Name, Items_in_Stock, Item_Price);
               this.manufacturer = manufacturer;               this.restockingFee = restockingFee;
     } 

     // returns inventory value plus the restocking fee
     public double getInventoryValue()
     {
          return super.getInventoryValue() + ( super.getInventoryValue() * restockingFee );
     } // end getInventoryValue

     public String toString()
     {
          StringBuffer sb = new StringBuffer( "Manufacturer:       \t" ).append( manufacturer ).append( "\n" );
          sb.append( super.toString() );
               return sb.toString();

     } // end toString

} // end class manufacturer

class RunInv extends JFrame implements ActionListener
{
     // utility class for displaying the picture
     private class MyPanel extends JPanel
     {
          ImageIcon image = new ImageIcon( "HTML.jpg" );
          int width = image.getIconWidth();
          int height = image.getIconHeight();
          long angle = 0;
          public MyPanel()
          {
               super();
          }

          public void paintComponent( Graphics g )
          {
               super.paintComponent(g);
               Graphics2D g2d = ( Graphics2D )g;
               g2d.rotate( Math.toRadians(angle), 200+width/2, 90+height/2 );
               g2d.drawImage( image.getImage(), 5, 5, this );
               g2d.dispose();
          }

     } // end class MyPanel

     int currentIndex; // currently displayed Item
     manufacturer[] inventory = new manufacturer[5];
     JLabel name;
     JLabel number;
     JLabel manufacturer;
     JLabel units;
     JLabel price;
     JLabel fee;
     JLabel totalValue;
     JTextField nameField = new JTextField(20);
     JTextField numberField = new JTextField(20);
     JTextField manufacturerField = new JTextField(20);
     JTextField unitsField = new JTextField(20);
     JTextField priceField = new JTextField(20);
     JTextField totalValue = new JTextField(20);
     JPanel display;
     JPanel displayHolder;
     JPanel panel;

     public RunInv()
     {
          makeTheDataItems();
          setSize( 700, 300 );
          setTitle( "Inventory Program" );

          // make the panels
          display = new JPanel();
          JPanel other = new JPanel();
          JPanel picture = new MyPanel();
          JPanel buttons = new JPanel();
          JPanel centerPanel = new JPanel();
          displayHolder = new JPanel();
          display.setLayout( new GridLayout( 3, 3 ) );
          other.setLayout( new GridLayout( 2, 1 ) );

          // make the labels
          name = new JLabel( "Product Name:" );
          number = new JLabel( "Product Number:" );
          manufacturer = new JLabel( "Manufacturer:" );
          units = new JLabel( "Units in Stock:" );
          price = new JLabel( "Price     :$" );
          fee = new JLabel( "Fee     :$" );
          totalValue = new JLabel( "Total value : $" );

          // make the buttons
          JButton first = makeButton( "First" );
          JButton next = makeButton( "Next" );
          JButton previous = makeButton( "Previous" );
          JButton last = makeButton( "Last" );
          JButton exit = makeButton( "Exit" );

          // other buttons
          JButton add = makeButton( "Add" );
          JButton delete = makeButton( "Delete" );
          JButton modify = makeButton( "Modify" );
          JButton save = makeButton( "Save" );
          JButton find = makeButton( "Find" );
               // add the labels to the display panel
               display.add( name );
               display.add( number );
               display.add( manufacturer );
               display.add( units );
               display.add( price );
               display.add( fee );
               display.add( totalValue );

               // add the buttons to the buttonPanel
               buttons.add( first );
               buttons.add( previous );
               buttons.add( next );
               buttons.add( last );
               buttons.add( exit );

               // add the picture panel and display to the centerPanel
               displayHolder.add( display );
               centerPanel.setLayout( new GridLayout( 2, 1 ) );
               centerPanel.add( picture );
               centerPanel.add( displayHolder );
               other.add( buttons );
               JPanel forAdd = new JPanel(); // add the other buttons to this panel
               forAdd.add( find );
               forAdd.add( add );
               forAdd.add( modify );
               forAdd.add( delete );
               forAdd.add( save );
               other.add( forAdd );

               // add the panels to the frame
               getContentPane().add( centerPanel, "Center" );
               getContentPane().add( other, "South" );
               this.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
               setVisible( true );

     } // end RunInv

} // end class RunInv extends JFrame implements ActionListener

[Norm]

The error messages give the line number where the error occured.
Go to each of those lines and put a comment next to it so that they can be easily seen in your post. For example: //<<<<<< ERROR HERE LINE 235

Where is the method makeButton defined? Can it be seen where it is being used?

[ljk8950]

I do not know how to fix this error message. What does this mean and how do I fix it?

InventoryProgramPart5.java:196: RunInv is not abstract and does not override abs
tract method actionPerformed(java.awt.event.ActionEvent) in java.awt.event.Actio
nListener
class RunInv extends JFrame implements ActionListener
^

[Norm]

Why did you code the following?

implements ActionListener

The above requires that you code ALL of the methods defined in the interface in your class. Have you misspelled it or given it the wrong signature?