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Help adding existing array to GUI

 

Help adding existing array to GUI
shanesing77

29 Nov, 2008 - 05:28 PM
Post #1

New D.I.C Head
*

Joined: 24 Oct, 2008
Posts: 15
Hello everyone. I am working on this 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.

I have added the buttons, but I'm not sure how to get my existing array to display in the GUI. I also wanted to know if I have to assign event handlers and listeners and create code whether the fields are editable or non editable if I am only displaying information from an existing array? I read my textbook thoroughly, but it doesn't say. Here is all my codes for this project. Any help would be greatly appreciated!

CODE

/*
* TestProductUI.java
*
* Created on November 29, 2008, 9:50 AM
*/

package my.testproduct;

import testproduct.Subclass;

/**
*
* @author  Administrator
*/
public class TestProductUI extends javax.swing.JFrame {

    /** Creates new form TestProductUI */
    public TestProductUI() {
        initComponents();
    }
private Subclass [] items;             //The inventory
    private int index;              //An index to keep track of the TestProduct to display

    private void handleFirstButton() {
        //Set the index to the first element in the array
        index = 0;

        //Update and disable modification
        
    }

    private void handlePreviousButton() {
        //Decrement the index
        index--;

        //If index is less than 0, wrap around to the last element of the array
        if ( index < 0 )
        {
            index = items.length - 1;

    }//end if
      
    }//end method handlePreviousButton
    private void handleNextButton()
    {
        //Increment the index
        index++;

        //If index exceeds the last valid array, wrap around to the first element of the array
        if ( index > items.length - 1)
        {
            index = 0;

        }//End if

      }//End method handleNextButton
    
    private void handleLastButton()
        {
            //Set the index to the last book in the array
            index = items.length - 1;

         }//End method handleLastButton

    

    /** 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() {

        mainPanel = new javax.swing.JPanel();
        nameLabel = new javax.swing.JLabel();
        itemNumLabel = new javax.swing.JLabel();
        unitsInStockLabel = new javax.swing.JLabel();
        valueLabel = new javax.swing.JLabel();
        actorLabel = new javax.swing.JLabel();
        totalValueLabel = new javax.swing.JLabel();
        nameText = new javax.swing.JTextField();
        itemNumText = new javax.swing.JTextField();
        unitsInStockText = new javax.swing.JTextField();
        valueText = new javax.swing.JTextField();
        actorText = new javax.swing.JTextField();
        totalValueText = new javax.swing.JTextField();
        firstButton = new javax.swing.JButton();
        previousButton = new javax.swing.JButton();
        nextButton = new javax.swing.JButton();
        lastButton = new javax.swing.JButton();
        jPanel1 = new javax.swing.JPanel();
        logoLabel = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        mainPanel.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "DvD Inventory", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Times New Roman", 1, 12))); // NOI18N

        nameLabel.setText("Title and Price:");

        itemNumLabel.setText("Item Number:");

        unitsInStockLabel.setText("Units in Stock:");

        valueLabel.setText("Value:");

        actorLabel.setText("Actor:");

        totalValueLabel.setText("Total Inventory Value:");

        totalValueText.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                totalValueTextActionPerformed(evt);
            }
        });

        firstButton.setText("First");
        firstButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                firstButtonActionPerformed(evt);
            }
        });

        previousButton.setText("Previous");
        previousButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                previousButtonActionPerformed(evt);
            }
        });

        nextButton.setText("Next");
        nextButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                nextButtonActionPerformed(evt);
            }
        });

        lastButton.setText("Last");
        lastButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                lastButtonActionPerformed(evt);
            }
        });

        logoLabel.setText("Myles Singleton Inc.");

        org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .add(logoLabel, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 130, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(57, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .add(logoLabel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
                .addContainerGap())
        );

        org.jdesktop.layout.GroupLayout mainPanelLayout = new org.jdesktop.layout.GroupLayout(mainPanel);
        mainPanel.setLayout(mainPanelLayout);
        mainPanelLayout.setHorizontalGroup(
            mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(mainPanelLayout.createSequentialGroup()
                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(mainPanelLayout.createSequentialGroup()
                        .addContainerGap()
                        .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(mainPanelLayout.createSequentialGroup()
                                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                                    .add(org.jdesktop.layout.GroupLayout.LEADING, actorLabel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .add(org.jdesktop.layout.GroupLayout.LEADING, valueLabel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .add(org.jdesktop.layout.GroupLayout.LEADING, unitsInStockLabel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .add(org.jdesktop.layout.GroupLayout.LEADING, itemNumLabel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .add(org.jdesktop.layout.GroupLayout.LEADING, nameLabel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .add(org.jdesktop.layout.GroupLayout.LEADING, totalValueLabel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
                                    .add(actorText)
                                    .add(valueText)
                                    .add(unitsInStockText)
                                    .add(itemNumText)
                                    .add(nameText, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 154, Short.MAX_VALUE)
                                    .add(org.jdesktop.layout.GroupLayout.TRAILING, totalValueText)))
                            .add(mainPanelLayout.createSequentialGroup()
                                .add(firstButton)
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)
                                .add(previousButton)
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)
                                .add(nextButton)
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)
                                .add(lastButton))))
                    .add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(98, Short.MAX_VALUE))
        );
        mainPanelLayout.setVerticalGroup(
            mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(mainPanelLayout.createSequentialGroup()
                .addContainerGap()
                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(nameLabel)
                    .add(nameText, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(itemNumLabel)
                    .add(itemNumText, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(unitsInStockLabel)
                    .add(unitsInStockText, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(valueLabel)
                    .add(valueText, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(actorLabel)
                    .add(actorText, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(totalValueLabel)
                    .add(totalValueText, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(18, 18, 18)
                .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(firstButton)
                    .add(previousButton)
                    .add(nextButton)
                    .add(lastButton))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(22, Short.MAX_VALUE))
        );

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(mainPanel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(mainPanel, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );

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

    

private void previousButtonActionPerformed(java.awt.event.ActionEvent evt) {                                              
if( evt.getSource() == previousButton )   //|< | pressed
            {
                handlePreviousButton();

}                                              
}
private void lastButtonActionPerformed(java.awt.event.ActionEvent evt) {                                          
if( evt.getSource() == lastButton )       //|>>| pressed
            {
                handleLastButton();

            }//End else if

}                                          

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



private void firstButtonActionPerformed(java.awt.event.ActionEvent evt) {                                            
if( evt.getSource() == firstButton )           //|<<| pressed
            {
                handleFirstButton();

}                                          
}
private void nextButtonActionPerformed(java.awt.event.ActionEvent evt) {                                          
if( evt.getSource() == nextButton )       //| >| pressed
            {
                handleNextButton();

            }//End if

}                                          
    

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

    // Variables declaration - do not modify
    private javax.swing.JLabel actorLabel;
    private javax.swing.JTextField actorText;
    private javax.swing.JButton firstButton;
    private javax.swing.JLabel itemNumLabel;
    private javax.swing.JTextField itemNumText;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JButton lastButton;
    private javax.swing.JLabel logoLabel;
    private javax.swing.JPanel mainPanel;
    private javax.swing.JLabel nameLabel;
    private javax.swing.JTextField nameText;
    private javax.swing.JButton nextButton;
    private javax.swing.JButton previousButton;
    private javax.swing.JLabel totalValueLabel;
    private javax.swing.JTextField totalValueText;
    private javax.swing.JLabel unitsInStockLabel;
    private javax.swing.JTextField unitsInStockText;
    private javax.swing.JLabel valueLabel;
    private javax.swing.JTextField valueText;
    // End of variables declaration

    

}


CODE

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package testproduct;


/**
*
* @author Administrator
*/
import java.text.DecimalFormat;//imports decimal formatter
import javax.swing.JFrame;
public class TestProduct {

    /**
     * @param args the command line arguments
     */
    
    static DecimalFormat formatter = new DecimalFormat("$##,###.00");//
    public static void main(String[] arg)
    {

      
        

        Subclass item1 = new Subclass("Indiana Jones", 23457, 12, 14.99, "Harrison Ford");//assigns values to items

        Subclass item2 = new Subclass("The Hulk", 67842, 17, 14.99, "Edward Norton"); //assigns values to items

        Subclass item3 = new Subclass("Iron Man", 77089, 10, 14.99, "Robert Downey JR."); //assigns values items

        Subclass item4 = new Subclass("Spiderman 3", 22547, 8, 10.99, "Tobey Maguire"); //assigns values to items

        Subclass item5 = new Subclass ("Superman Returns", 40439, 11, 11.99, "Brandon Routh");//assigns values to items

        Subclass item6 = new Subclass("Spiderwick Chronicles", 50459, 9, 12.99, "Freddie Highmore"); //assigns values to items

        Subclass item7 = new Subclass ("Kung Fu Panda", 47865, 14, 17.99, "Jack Black"); //assigns values to items

        Subclass item8 = new Subclass ("Speed Racer", 23969, 6, 15.99, "Emile Hirsch");//assigns values to items

        Subclass item9 = new Subclass ("Get Smart", 60571, 18, 19.99, "Steve Carrell"); //assigns values to items

        Subclass item10 = new Subclass ("Batman The Dark Knight", 18590, 19, 19.99,"Christian Bale");//assigns values to items

       Subclass items = new Subclass();//creates object items

        items.addProduct(item1);
        items.addProduct(item2);
        items.addProduct(item3);
        items.addProduct(item4);
        items.addProduct(item5);
        items.addProduct(item6);
        items.addProduct(item7);
        items.addProduct(item8);
        items.addProduct(item9);
        items.addProduct(item10);

items.printInventory();//prints inventory list
  
  
  
  
  
        
}


}


CODE

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package testproduct;

/**
*
* @author Administrator
*/
public class Subclass extends Product
{
    
    protected String movieActor;
    
  public Subclass(String productName, int itemNum, int unitsInStock, double unitPrice, String actor)
    {
        // Pass on the values needed for creating the Product class
        super(productName, itemNum, unitsInStock, unitPrice);
        movieActor = actor;
    }
  
  public Subclass()
    
    {
        productName = " ";  
        itemNum = 0;
        unitsInStock = 0;
        unitPrice = 0;
        movieActor = " ";
      
        
    
  }

    public void setActor(String strMovieActor)
    {
        movieActor = strMovieActor;
    }

    public String getActor()
    {
        return movieActor;
    }

    @Override
public double productValue()
    {
        return super.productValue() * 1.05;
    }

        public double getRestockingFee()
    {
        return super.productValue() * .05;
    }

    @Override
public String toString()
    {
           return super.toString() + "     Actor:" + movieActor;
    }

          
}



CODE

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package testproduct;

/**
*
* @author Administrator
*/

import java.text.DecimalFormat;
import javax.swing.JOptionPane;
public class Product
{
    
    int inventorySize = 15;
    protected Product items[] = new Product[inventorySize];
    
    DecimalFormat formatter = new DecimalFormat("$##,###.00");
    
    public void addProduct(Product item) {
        for (int i = 0; i < inventorySize; i++) {
            if (items[i] == null) {
                items[i] = item;
                return;
            }
        }
    }
public double totalInvValue(Product items[])
{
        double sumOfInventory = 0;
        for (Product item : items)
{
            
     if (item != null){sumOfInventory += item.productValue();}
            
}
        return sumOfInventory;
    }

public void printInventory()
{
    for (Product item : items)
    {
        String str = item.toString() + "     Item Number:" + item.getItemNum();
        str += "   Units In Stock:" + item.getUnitsInStock();
        str += "     Value:" + formatter.format(item.productValue())+ "\n Total inventory is:" + formatter.format(totalInvValue(items));  

JOptionPane.showMessageDialog(null, str, "DvD Inventory",  JOptionPane.PLAIN_MESSAGE);

    
    }
}

    protected String productName;
    protected int itemNum;
    protected int unitsInStock;
    protected double unitPrice;
    
      
    
    public Product(String dvd, int number, int stock, double price)
    {
        productName = dvd;
        itemNum = number;
        unitsInStock = stock;
        unitPrice = price;
        
    }
    
    public Product()
    {
        productName = " ";  
        itemNum = 0;
        unitsInStock = 0;
        unitPrice = 0;
      
        
     }
    
    // String representation of the product
    
    @Override
    public String toString()
    {
        return productName + "     Price:" + unitPrice;
    }


     public double productValue()
     {  
            return (double)unitsInStock * unitPrice;  
     }  
      
    public String getproductName()
    {
        return productName;
    }

    
    public void setProductName(String strProductName)  
{  
       productName = strProductName;  
}  
  
    public void setUnitPrice(double strUnitPrice)
    {
        unitPrice = strUnitPrice;
    }
    
    public double getUnitPrice()
    {
        return unitPrice;//retrieves unit price
    }
    
    public void setUnitsInStock(int strUnitsInStock)
    {
        unitsInStock = strUnitsInStock;//sets product name
    }
    
    public int getUnitsInStock()
    {
        return unitsInStock;//retrieves units in stock
    }
    
    public void setItemNum(int strItemNum)
    {
        itemNum = strItemNum;//sets product name
    }
    public int getItemNum()
    {
        return itemNum;//retrieves item number
    }
    
    public static void sortItems(Product items[])
    {
        String test, itemName;
        Product prodTemp;
        
        for(int i=0; i<items.length; i++)
        {
            test = items[i].toString();
            
            for(int j=i; j<items.length; j++)
            {
                itemName = items[j].toString();
                if (itemName.compareToIgnoreCase(test) < 0)
                {
                    prodTemp = items[i];
                    items[i] = items[j];
                    items[j] = prodTemp;
                                        
                }
            }
            
        }
      
    }





    
}
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Martyr2

RE: Help Adding Existing Array To GUI

29 Nov, 2008 - 08:33 PM
Post #2

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My Contributions
To navigate back and forth and to jump around in the array, think about how you would modify the index value when referencing the array.

For instance, if I wanted to access the first item in "items" I would use items[0]. How would I go to the next? I would increment the value in the subscript. items[1]. How would I go to the end of the array? items[items.length - 1]. We know going to the beginning is just a matter of accessing items[0].

So your program will keep track of where in the array you are (so create a form level variable that you can manipulate with your functions that will "point" to the current item) and then have each function simply change the value of this variable.

Once you change the pointer, you can use the pointer to access the items inventory array and get the item, then display the contents in your GUI fields.

Here is a basic concept program below with an integer array....

java

public class myInventory {
     private int ptrvar;
     private Item[] items;

     public static void main(String args[]) {
          // Load your items into the array

          // Set it at the beginning
          ptrvar = 0;
          
          // Set a variable to hold the current item
          Item current = items[ptrvar];

          // Move the pointer up 2
          movenext();
          movenext();

          // Get the item at items[2] (third item)
          current = items[ptrvar];

          // Use current to populate GUI

          // Move back 1
          moveprevious();

          // Now get the current item again
          current = items[ptrvar];

          // Now use current again to populate GUI
     }

     // Advance the "pointer" 1 and if it is at the end, 
     // Set it at the beginning
     public static void movenext() {
          ptrvar += 1;

          if (ptrvar == items.length - 1)  {
               ptrvar = 0;
          }
     }

     // Advance the pointer back 1 and if at the beginning
     // set it to the end
     public static void moveprevious() {
          ptrvar -= 1;

          if (ptrvar < 0)  {
               ptrvar = items.length - 1;
          }
     }

     
}


Now this code is VERY crude and basic and meant to show you some of the ideas of how you can move back and forth. I have done your movenext and moveprevious, so now you can do ones for movelast etc.

But hopefully you get the concept. Enjoy!

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