Hi i need help with getting my homework for school

Question

im in a nine week class that ends tommorw and need help go\etting my program working properly these are the requirements ofr the assignments:
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.
Modify the Inventory Program to include an Add button, a Delete button, and a Modifybutton on the GUI. These buttons should allow the user to perform the corresponding actions on the item name, the number of units in stock, and the price of each unit. An item added to the inventory should have an item number one more than the previous last item. Add a Save button to the GUI that saves the inventory to a C:\data\inventory.dat file. Use exception handling to create the directory and file if necessary. Add a search button to the GUI that allows the user to search for an item in the inventory by the product name. If the product is not found, the GUI should display an appropriate message. If the product is found, the GUI should display that product’s information in the GUI. Post final .class and .java files as an attachment.
this is what i have there are three java files im puttong in here
first is the panel frame
import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Component;
import javax.swing.SwingConstants;
import javax.swing.Icon;
import javax.swing.JComboBox;
import javax.swing.JTextArea;
import javax.swing.JList;
import java.util.*;
import java.text.NumberFormat;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import java.io.*;
import java.util.Scanner;
import javax.swing.JOptionPane;
import java.text.NumberFormat;
public class PanelFrame extends JFrame
     private JPanel buttonJPanel; // panel to hold buttons
     private JButton buttons[]; // array of buttons
     private JLabel label1; // JLabel iventory number
     private JLabel label2; // JLabel product name
     private JLabel label3; // JLabel product price
     private JLabel label4; // JLabel product in stock
     private String p_ProductName; // private variable for the employee name.
     private int p_UnitCount; // private variable for the hours worked.
     private double p_UnitPrice; // private variable for the hourly wage.
     private int p_ItemNumber; // private inventory number
     //create inventory object
     Inventory myInventory = new Inventory ();
// no-argument constructor
public PanelFrame()
super( "Panel Demo" );
//Add items to the inventory within the Invntory
          myInventory.addItem(new productinfo(1,"Html a Begginers Guide",14,29.99));
          myInventory.addItem(new productinfo(2,"Html 4 for Dummies",6,29.99));
          myInventory.addItem(new productinfo(3,"Visio Step by Step",7,24.99));
          myInventory.addItem(new productinfo(4,"APA Publication Manual",14,47.99));
          myInventory.addItem(new productinfo(5,"The Gregg Reference Manual",14,37.56));
setLayout( new FlowLayout() ); // set frame layout
// JLabel constructor with a string argument
          label1 = new JLabel( "Inventory Number:%s: %d\n ",p_ItemNumber );
          label1.setToolTipText( "This is Inventory number" );
          add( label1 ); // add label1 to JFrame
          label2 = new JLabel( "\n\nProduct Name: %s: %s\n", p_ProductName);
          label2.setToolTipText( "This is Product Name" );
          add( label2 ); // add label1 to JFrame
          label3 = new JLabel( "\n\nPrice : %s:$%.2f\n",p_UnitPrice );
          label3.setToolTipText( "This is product Price");
          add( label3 ); // add label1 to JFrame
          label4 = new JLabel( "\n\nQuanity %s: %d\n",p_UnitCount);
          label4.setToolTipText( "This is Quanity in stock: " );
          add( label4 ); // add label1 to JFrame
buttons = new JButton[ 4 ]; // create buttons array
buttonJPanel = new JPanel(); // set up panel
buttonJPanel.setLayout( new GridLayout( 1, buttons.length ) );
          String names[] = { "First", "Previous", "Next", "Last"  };
          JButton buttons[] = new JButton[ names.length ];
          // create and add buttons
          for ( int count = 0; count < buttons.length; count++ )
          buttons[ count ] = new JButton( names[ count ] );
          buttonJPanel.add( buttons[ count ] ); // add button to panel
          } // end for
// setup the logo for the GUI ...image needs to be in same directory as source code
          URL url = this.getClass().getResource("book103.gif");
          Image img = Toolkit.getDefaultToolkit().getImage(url);
          // scale the image so that it'll fit in the GUI
          Image scaledImage = img.getScaledInstance(100, 100, Image.SCALE_AREA_AVERAGING);
          // create a JLabel with the image as the label's Icon
          Icon logoIcon = new ImageIcon(scaledImage);
          JLabel companyLogoLabel = new JLabel(logoIcon);
          companyLogoLabel.setBorder(BorderFactory.createEmptyBorder(3,3,3,3));
          // add the logo to the GUI
          getContentPane().add(companyLogoLabel, BorderLayout.WEST);
add( buttonJPanel, BorderLayout.SOUTH ); // add panel to JFrame
} // end PanelFrame constructor
} // end class PanelFrame

Answer 1

this is the original part again with the code tag added
import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Component;
import javax.swing.SwingConstants;
import javax.swing.Icon;
import javax.swing.JComboBox;
import javax.swing.JTextArea;
import javax.swing.JList;
import java.util.;
import java.text.NumberFormat;
import javax.swing.;
import java.awt.;
import java.awt.event.;
import java.net.URL;
import java.io.*;
import java.util.Scanner;
import javax.swing.JOptionPane;
import java.text.NumberFormat;
public class PanelFrame extends JFrame
private JPanel buttonJPanel; // panel to hold buttons
private JButton buttons[]; // array of buttons
private JLabel label1; // JLabel iventory number
private JLabel label2; // JLabel product name
private JLabel label3; // JLabel product price
private JLabel label4; // JLabel product in stock
private String p_ProductName; // private variable for the employee name.
private int p_UnitCount; // private variable for the hours worked.
private double p_UnitPrice; // private variable for the hourly wage.
private int p_ItemNumber; // private inventory number
//create inventory object
Inventory myInventory = new Inventory ();
// no-argument constructor
public PanelFrame()
super( "Panel Demo" );
//Add items to the inventory within the Invntory
myInventory.addItem(new productinfo(1,"Html a Begginers Guide",14,29.99));
myInventory.addItem(new productinfo(2,"Html 4 for Dummies",6,29.99));
myInventory.addItem(new productinfo(3,"Visio Step by Step",7,24.99));
myInventory.addItem(new productinfo(4,"APA Publication Manual",14,47.99));
myInventory.addItem(new productinfo(5,"The Gregg Reference Manual",14,37.56));
setLayout( new FlowLayout() ); // set frame layout
// JLabel constructor with a string argument
label1 = new JLabel( "Inventory Number:%s: %d\n ",p_ItemNumber );
label1.setToolTipText( "This is Inventory number" );
add( label1 ); // add label1 to JFrame
label2 = new JLabel( "\n\nProduct Name: %s: %s\n", p_ProductName);
label2.setToolTipText( "This is Product Name" );
add( label2 ); // add label1 to JFrame
label3 = new JLabel( "\n\nPrice : %s:$%.2f\n",p_UnitPrice );
label3.setToolTipText( "This is product Price");
add( label3 ); // add label1 to JFrame
label4 = new JLabel( "\n\nQuanity %s: %d\n",p_UnitCount);
label4.setToolTipText( "This is Quanity in stock: " );
add( label4 ); // add label1 to JFrame
buttons = new JButton[ 4 ]; // create buttons array
buttonJPanel = new JPanel(); // set up panel
buttonJPanel.setLayout( new GridLayout( 1, buttons.length ) );
String names[] = { "First", "Previous", "Next", "Last" };
JButton buttons[] = new JButton[ names.length ];
// create and add buttons
for ( int count = 0; count < buttons.length; count++ )
buttons[ count ] = new JButton( names[ count ] );
buttonJPanel.add( buttons[ count ] ); // add button to panel
} // end for
// setup the logo for the GUI ...image needs to be in same directory as source code
URL url = this.getClass().getResource("book103.gif");
Image img = Toolkit.getDefaultToolkit().getImage(url);
// scale the image so that it'll fit in the GUI
Image scaledImage = img.getScaledInstance(100, 100, Image.SCALE_AREA_AVERAGING);
// create a JLabel with the image as the label's Icon
Icon logoIcon = new ImageIcon(scaledImage);
JLabel companyLogoLabel = new JLabel(logoIcon);
companyLogoLabel.setBorder(BorderFactory.createEmptyBorder(3,3,3,3));
// add the logo to the GUI
getContentPane().add(companyLogoLabel, BorderLayout.WEST);
add( buttonJPanel, BorderLayout.SOUTH ); // add panel to JFrame
} // end PanelFrame constructor
} // end class PanelFrame