Implementing Program into simple GUI

Question

I have completed a program that will show the inventory one at a time. I am using Netbeans and i have generated two JFrames. One that will be the welcome screen with a start button to show the first item...And the second one to have a textbox with a Next button to act as the enter button for my previous program. I have created the format for both JFrames, I dont know where to start implementing the completed program into a simple screen that will go through each item....not asking for a solution but if there is any suggestions on where to put what...I have created buttons on each JFrame and set it to action..Please help and thank you....
package inventory;
import java.util.*;
public class Main //main class
   // main method
   public static void main( String args[] )
      double total = 0.0;
      Product inventory[]; // This is the array variable
       Scanner input = new Scanner(System.in);
      inventory = new Product[ 5 ];
      inventory [ 0 ] = new Product( "Apple", 1, 200, 1.00 );
      inventory [ 1 ] = new Product( "Banana", 2, 100, 2.00 );
      inventory [ 2 ] = new Product( "Pear", 3, 50, 3.00 );
      inventory [ 3 ] = new Product( "Pinapple", 4, 60, 4.00 );
      inventory [ 4 ] = new Product( "Orange", 5, 150, 5.00 );
       //needed to have a sort method call here BLG
       sortItems(inventory);
      for (int counter = 0; counter < 5; counter++)
         System.out.printf(inventory[counter].toString()); //way to print out
           //added two lines to get one-by-one BLG
           System.out.println("Please press enter to see the next item...");
           input.nextLine();
      } // end for
       total = getTotalValue(inventory); //added BLG
      System.out.printf( "The total value of the inventory is: $%.2f\n\n", total );
   } // end main method
   public static double getTotalValue(Product Items[])
          double totalValue = 0.0;
          for (Product myItem : Items)
               totalValue += myItem.getValue();     
          return totalValue;
     //sort the items by name  added BLG
     public static void sortItems(Product Items[])
          for(int i=0;i < Items.length; i++)
               Product myProduct = Items;
               int j;
               for (j = i - 1; j >= 0 && Items[j].getproductName().compareTo(myProduct.getproductName()) > 0; j--)
                    //compare the current item to the last item name
                    Items[j+1] = Items[j];
               Items[j+1] = myProduct;
} // end class mainpackage inventory;
public class Product{
public String name; //Declares product name
public int id; //Declares product ID
public int amount; //Declares number of Units
public double cost; //Declares cost of each unit
public Product( String name, int id, int unit, double cost ){ //Creates a constructor for Product class
this.name = name;
this.id = id;
this.amount = unit;
this.cost = cost;
public Product( double priceUnit )//Seprate constructor for the restock class
this.cost = priceUnit;
Product inventory[] = new Product [ 3 ];
public void setProduct ( String theproductIn ){
name = theproductIn;
public void setId ( int itemNumberIn ){
id = ( ( itemNumberIn > 0 ) ? itemNumberIn :0 );
public void setAmount ( int unitsIn ){
amount = ( ( unitsIn > 0 )?unitsIn:0 );
public void setCost ( double priceUnitIn ){  
cost = ( ( priceUnitIn > 0.0 )?priceUnitIn:0.0 );
public String getproductName(){
return ( name );
public int getId(){
return ( id );
public int getAmount(){
return ( amount );
public double getCost(){
return ( cost );
public double getValue(){
return ( amount * cost );
public String toString (){     
String formatString = "Product Name : %s\n";
formatString += "Id Number : %d\n";
formatString += "Number of units on hand : %d\n";
formatString += "Price of each unit : $%.2f\n";
formatString += "Value of total units in stock : $%.2f\n";
return (String.format ( formatString, name, id, amount, cost, getValue()));

Answer 1

package inventory;
public class restock extends Product
        private double reStockingFee;
     public restock(double cost, double reStockingFee,double getValue) {
       super(getValue*1.05);
       this.reStockingFee = reStockingFee;
     public double getCost() {
         return super.getCost() + reStockingFee;
     public String toString() {
           String formatString    = "Restock Price                   : %s\n";
          return (String.format ( formatString, super.getCost()));
package Inventory4;
public class Main extends javax.swing.JFrame {
    /** Creates new form Main */
    public Main() {
        initComponents();
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jButton1 = new javax.swing.JButton();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jLabel1.setText("    Welcome to the inventory program");
        jButton1.setText("Start");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                .addContainerGap(40, Short.MAX_VALUE)
                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 209, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(19, 19, 19))
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(86, 86, 86)
                .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 91, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(91, Short.MAX_VALUE))
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(37, 37, 37)
                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(42, 42, 42)
                .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 42, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(46, Short.MAX_VALUE))
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(129, Short.MAX_VALUE)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(139, 139, 139))
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(35, 35, 35)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(68, Short.MAX_VALUE))
        pack();
    }// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Main().setVisible(true);
    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration
}