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Thread: Code

  1. #1
    Junior Member
    Join Date
    Nov 2013
    Thanked 0 Times in 0 Posts

    Default Code

    Good night everyone, I am trying to code a program with a first, next, previous, and last buttons. I can't seem to get them to navigate through my array.

    --- Update ---

    Here is the code from my last post.

    /* Program: Display Inventory GUI Form
    * File: DisplayInventory.java
    * Summary: Inherits JFrame and build an aplication that contains label and
    * text fields.
    * Author: Mark Byous
    * Date: 10/10/2013

    import java.awt.GridLayout; // create grid layout
    import java.awt.BorderLayout; // set border layout
    import java.awt.event.ActionEvent; // required to click events
    import java.awt.event.ActionListener; // required for click events
    import javax.swing.JPanel; // create panels
    import javax.swing.JFrame; // require to use the frame
    import javax.swing.JButton; // required to create buttons
    import javax.swing.JLabel; // requierd to create text fields
    import javax.swing.JTextField; // required to create texts fields
    import javax.swing.ImageIcon; // required to access images

    public class DisplayInventory extends JFrame implements ActionListener
    // Declare Class Variables

    // Declare Gridpanel as main panel inserted into gridPanel
    private JPanel gridPanel = new JPanel(); // one panel that contains my gridLayout
    private JPanel panel = new JPanel(); // panels used to display buttons, labels and text fields

    // Declare buttons
    JButton firstButton; // first button
    JButton nextButton; // next button
    JButton previousButton; // previous button
    JButton lastButton; // last button

    // Declare text Fields
    JTextField itemField; // item field
    JTextField itemNumberField; // itemnumber field
    JTextField priceField; // price field
    JTextField inventoryField; // inventory field
    JTextField numberField; // number field
    JTextField weightField; // weight field
    JTextField restockField; // restock field
    JTextField totalInventoryField; // totalInventory field

    // Declare Labels
    JLabel lblItem; // item label
    JLabel lblItemNumber; // itemNumber label
    JLabel lblPrice; // price label
    JLabel lblInventory; // inventory label
    JLabel lblNumber; // number label
    JLabel lblWeight; // weight label
    JLabel lblRestock; // restock label
    JLabel lblTotalInventory; // totalInventory label

    // Declare 5 Stock Items
    Product product1;
    Product product2;
    Product product3;
    Product product4;
    Product product5;

    private static final int Max_Product = 5; // maximum size of product array

    Product[] product = new Product[Max_Product]; // create product array

    private static int ArrayIndex = 0; // array index

    public DisplayInventory() // constructor

    // begin DisplayInventory class

    // create and initialize five product objects
    // instantiate the Stock class
    Product product1 = new Product("Fuse", 123, 10.25, 10, .50); // create an instance of a stock item
    Product product2 = new Product("Resistor", 124, 6.55, 6, .0042); // create an instance for a stock item
    Product product3 = new Product("Capacitor", 125, 8.47, 12, 1.00); // create an instance for a stock item
    Product product4 = new Product("Inductor", 126, 9.86, 14, 2.00); // create an instance for a stock item
    Product product5 = new Product("Transistor", 127, 14.60, 10, .0034); // create an insatnce for a stock item

    // add the product objects to the array
    product[0] = product1; // add Fuse to Stock array
    product[1] = product2; // add Resistor to Stock array
    product[2] = product3; // add Capacitor to Stock array
    product[3] = product4; // add Inductor to Stock array
    product[4] = product5; // add Transistor to Stock array

    Product.sortByItem(product); // sort the array of products by name

    gridPanel.setLayout(new BorderLayout()); // create border layout
    gridPanel.add(this.createLabelPanel(), BorderLayout.WEST); // add label panel
    gridPanel.add(this.createTextPanel(), BorderLayout.CENTER); // add field panel
    gridPanel.add(this.createButtonPanel(), BorderLayout.SOUTH); // add button panel

    // helper method creates a panel for the button
    private JPanel createButtonPanel()
    // ActionListener btnListen = new ButtonListener(); // create listener

    //create buttons
    firstButton = new JButton("First"); // create first button
    firstButton.setActionCommand(String.valueOf(this.p roduct1)); // action command for button event // button listener to click button

    nextButton = new JButton("Next"); // create and label button
    nextButton.setActionCommand("Next"); // action command for click button event
    // nextButton.addActionListener(btnListen); // button listener for click button event

    previousButton = new JButton("Previous"); // create button to view previous product
    previousButton.setActionCommand("Previous"); // action command for click button
    previousButton.addActionListener(this); // button for click button event

    lastButton = new JButton("Last"); // create last button
    lastButton.setActionCommand(String.valueOf(this.pr oduct5)); // action command for click button
    lastButton.addActionListener(this); // add action Listtener for click button

    // create panel object
    JPanel panel = new JPanel();

    panel.add(firstButton); // add first button panel
    panel.add(nextButton); // add next button panel
    panel.add(previousButton); // add previous button panel
    panel.add(lastButton); // add last button panel

    return panel; // return panel
    } // end createButtonPanel method

    private JPanel createLabelPanel() {

    // create instance label objects
    ImageIcon icon = new ImageIcon(".\\src\\productLogo.jpg"); // get logo
    JLabel lblLogo = new JLabel(icon); // add the image to a label

    lblItem = new JLabel("Product Name:"); // label for name of product
    lblItemNumber = new JLabel("Product Number:"); // Label for product number
    lblPrice = new JLabel("Product Price:"); // label for pricr of product
    lblInventory = new JLabel("The Inventory Price is:"); // label for total inventory price
    lblNumber = new JLabel("Number of Items in Stock:"); // label for amount of items in inventory
    lblWeight = new JLabel("Weight of Product:"); // label for weight of product
    lblRestock = new JLabel("The Restock fee is:"); //label for restocking fee
    lblTotalInventory = new JLabel("The Price of the Entire Inventory:"); // label for the total inventory

    panel = new JPanel();
    panel.setLayout(new GridLayout(6, 1));

    // add labels to the panel


    return panel;
    } // end createlabelPanel method

    private JPanel createTextPanel()

    // create instances of text box objects
    JLabel lblCompanyName = new JLabel(" Huber"); // company Logo

    itemField = new JTextField(); // item text field
    itemField.setEditable(false); // set the field as not editable so that the user can not edit field

    itemNumberField = new JTextField(); // itemNumber text field
    itemNumberField.setEditable(false); // set the field as not editable so that the user can not edit the field

    priceField = new JTextField(); // price text field
    priceField.setEditable(false); // set field as not editable

    numberField = new JTextField(); // number text field
    numberField.setEditable(false); // set field as not editable

    weightField = new JTextField(); // weight text field
    weightField.setEditable(false); // set field as not editable

    inventoryField = new JTextField(); // inventory text field
    inventoryField.setEditable(false); // set field as not editable

    restockField = new JTextField(); // restock text field
    restockField.setEditable(false); // set field as not editable

    totalInventoryField = new JTextField(); // totalInventory text field
    totalInventoryField.setEditable(false); // set field as not editable

    panel = new JPanel(); // create panel object
    panel.setLayout(new GridLayout(6, 1)); // create grid layout

    panel.add(lblCompanyName); // add logo to gridLayout

    panel.add(itemField); // add the product name to the grid layout
    panel.add(itemNumberField); // add the product number to the grid layout
    panel.add(priceField); // add the product price to the grid layout
    panel.add(inventoryField); // add the price of the product inventory to the grid layout
    panel.add(numberField); // add the number of items in stock to the grid layout
    panel.add(weightField); // add the weight of the product to the grid layout
    panel.add(restockField); // add the restoick fee to the grid layout
    panel.add(totalInventoryField); // add the amount of the totalInventory to that grid layout

    return panel; // return the panel

    } // end createTextPanel method

    public void actionPerformed(ActionEvent e)
    if(product[ArrayIndex].getTotalInventory() == 0) //
    for(int x=0;x<product.length;x++)

    totalInventoryField.setText(String.valueOf(product[ArrayIndex].getTotalInventory())); // display the sum of inventory

    // add button functions
    if("First".equals(e.getActionCommand())); //
    if (!" Next".equals(e.getActionCommand())) // if next button is clicked

    if (" Previous".equals(e.getActionCommand())) // previous button is clicked
    if (" Last".equals(e.getActionCommand())) // if last button is clicked
    } // end action performed

    private void setFieldValues()
    { // display product information to GUI

    itemField.setText(product[ArrayIndex].getItem()); // get the product name
    // and assign it to the item text field
    itemNumberField.setText(String.valueOf(product[ArrayIndex].getItemNumber())); // get the product number
    // and assign it to the itemnumber text field
    priceField.setText(String.valueOf(product[ArrayIndex].getPrice())); // get the price of the product
    // and assign it to the price text field
    inventoryField.setText(String.valueOf(product[ArrayIndex].getInventory())); // get the inventory price
    // and assign it to the inevntory text field
    numberField.setText(String.valueOf(product[ArrayIndex].getNumber())); // get the number of items in stock
    // and assign it to the number text field
    weightField.setText(String.valueOf(product[ArrayIndex].getWeight())); // get the weight of the product
    // and assign it to the weight text field
    restockField.setText(String.valueOf(product[ArrayIndex].getRestock())); // get the restock fee
    // and assign it to the restock text field
    totalInventoryField.setText(String.valueOf(product[ArrayIndex].getTotalInventory())); // get the amount of the totalInventory
    // and assign it to the totalInventory text field
    ArrayIndex = ArrayIndex + 1; // increment the arrayindex to get to the next value


    public static void main(String[] args)
    JFrame frame = new DisplayInventory(); // create a frame object

    frame.setSize(400, 200); // set the size of the window
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E); // close the application
    frame.setTitle("My Inventory Application"); // set the title of the window
    frame.setLocationRelativeTo(null); // center the form
    frame.setVisible(true); // display form

    } // end main method
    } // end DisplayInventory class

  2. #2
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,514 Times in 2,465 Posts

    Default Re: Code

    Please edit your post and wrap your code with code tags:
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

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