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Nov 18th, 2008
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Listing questions

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I have the following listing application that allows the user to make selections to build a skateboard. How can I add the values to the arrays which are declared? I do not understand how each value will be displayed when a particular option is selected.

Also... I want to add a button to that displays a message showing the total and tax when the user has selected all of their options... I am not sure where to add that code....

here is what i have so far.... ignore the comments they are from a similar listing exercise which I have edited, and just not deleted yet

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.event.*;
import javax.swing.*;

/**
 *  This class demonstrates the List Component.
 */

public class SkateBoard extends JFrame
{
   private JPanel deckPanel;         // To hold components
   private JPanel selectedDeckPanel; // To hold components
   private JList deckList;           // A list of decks
   private JTextField selectedDeck;  // The selected deck
   private JLabel deckLabel;              // To display a message
   
   private JPanel truckPanel;         // To hold components
   private JPanel selectedTruckPanel; // To hold components
   private JList truckList;           // A list of trucks
   private JTextField selectedTruck;  // The selected truck
   private JLabel truckLabel;              // To display a message
   
   private JPanel wheelPanel;         // To hold components
   private JPanel selectedWheelPanel; // To hold components
   private JList wheelList;           // A list of wheels
   private JTextField selectedWheel;  // The selected wheel
   private JLabel wheelLabel;              // To display a message
   
   private JPanel extraPanel;         // To hold components
   private JPanel selectedExtraPanel; // To hold components
   private JList extraList;           // A list of wheels
   private JTextField selectedExtra;  // The selected wheel
   private JLabel extraLabel; 
   
   private JButton button;
   private JPanel buttonPanel;
   
   
   // The following array holds the values that will be
   // displayed in the deckList list component.
   private String[] decks = {"The Master Thrasher", "The Dictator", "The Street King"};
   private String[] trucks = { "7.75 inch axle", "8-inch axle", "8.5 inch axle"};
   private String[] wheels = { "51 mm", "55 mm", "58 mm", "61 mm"};
   private String[] extras = { "Grip Tape", "Bearings", "Riser Pads", "Nuts and Bolts Kit"};
   
   /**
    *  Constructor
    */

   public SkateBoard()
   {
      // Call the JFrame constructor.
      super("Build Your Custom SkateBoard");
      
      setSize(200,200);

      // Specify an action for the close button.
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

      // Create a BorderLayout manager for the content pane.
      setLayout(new GridLayout(2,4));

      // Build the deck and selectedDeck panels
      buildDeckPanel();
      buildTruckPanel();
      buildWheelPanel();
      buildExtraPanel();
      buildSelectedDeckPanel();
      buildSelectedTruckPanel();
      buildSelectedWheelPanel();
      buildSelectedExtraPanel();
     

      // Add the panels to the content pane.
      add(deckPanel);
      add(truckPanel);
      add(wheelPanel);
      add(extraPanel);
      add(selectedDeckPanel);
      add(selectedTruckPanel);
      add(selectedWheelPanel);
      add(selectedExtraPanel);
      // Pack and display the window.
      pack();
      setVisible(true);
   }

   /**
    *  The buildDeckPanel method adds a list containing
    *  the names of the decks to a panel.
    */

   private void buildDeckPanel()
   {
      // Create a panel to hold the list.
      deckPanel = new JPanel();

      // Create the list.
      deckList = new JList(decks);

      // Set the selection mode to single selection.
      deckList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

      // Register the list selection listener.
      deckList.addListSelectionListener(new DeckListener());

      // Add the list to the panel.
      deckPanel.add(deckList);
   }
   private void buildTruckPanel()
   {
      // Create a panel to hold the list.
      truckPanel = new JPanel();

      // Create the list.
      truckList = new JList(trucks);

      // Set the selection mode to single selection.
      truckList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

      // Register the list selection listener.
      truckList.addListSelectionListener(new TruckListener());

      // Add the list to the panel.
      truckPanel.add(truckList);
   }

   private void buildWheelPanel()
   {
      // Create a panel to hold the list.
      wheelPanel = new JPanel();

      // Create the list.
      wheelList = new JList(wheels);

      // Set the selection mode to single selection.
      wheelList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

      // Register the list selection listener.
      wheelList.addListSelectionListener(new WheelListener());

      // Add the list to the panel.
      wheelPanel.add(wheelList);
   }
   
    private void buildExtraPanel()
   {
      // Create a panel to hold the list.
      extraPanel = new JPanel();

      // Create the list.
      extraList = new JList(extras);

      // Set the selection mode to single selection.
      extraList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

      // Register the list selection listener.
      extraList.addListSelectionListener(new ExtraListener());

      // Add the list to the panel.
      extraPanel.add(extraList);
   }
   /**
    *  The buildSelectedDeckPanel method adds an uneditable
    *  text field to a panel.
    */

   private void buildSelectedDeckPanel()
   {
      // Create a panel to hold the text field.
      selectedDeckPanel = new JPanel();

      // Create the label.
      deckLabel = new JLabel("Deck: ");

      // Create the text field.
      selectedDeck = new JTextField(12);

      // Make the text field uneditable.
      selectedDeck.setEditable(false);

      // Add the label and text field to the panel.
      selectedDeckPanel.add(deckLabel);
      selectedDeckPanel.add(selectedDeck);
   }
   
      private void buildSelectedTruckPanel()
   {
      // Create a panel to hold the text field.
      selectedTruckPanel = new JPanel();

      // Create the label.
      truckLabel = new JLabel("Truck: ");

      // Create the text field.
      selectedTruck = new JTextField(10);

      // Make the text field uneditable.
      selectedTruck.setEditable(false);

      // Add the label and text field to the panel.
      selectedTruckPanel.add(truckLabel);
      selectedTruckPanel.add(selectedTruck);
   }

private void buildSelectedWheelPanel()
   {
      // Create a panel to hold the text field.
      selectedWheelPanel = new JPanel();

      // Create the label.
      wheelLabel = new JLabel("Wheel: ");

      // Create the text field.
      selectedWheel = new JTextField(5);

      // Make the text field uneditable.
      selectedWheel.setEditable(false);

      // Add the label and text field to the panel.
      selectedWheelPanel.add(wheelLabel);
      selectedWheelPanel.add(selectedWheel);
   }

private void buildSelectedExtraPanel()
   {
      // Create a panel to hold the text field.
      selectedExtraPanel = new JPanel();

      // Create the label.
      extraLabel = new JLabel("Extras: ");

      // Create the text field.
      selectedExtra = new JTextField(15);

      // Make the text field uneditable.
      selectedExtra.setEditable(false);

      // Add the label and text field to the panel.
      selectedExtraPanel.add(extraLabel);
      selectedExtraPanel.add(selectedExtra);
   }



   private class DeckListener implements ListSelectionListener
   {
      public void valueChanged(ListSelectionEvent e)
      {
         // Get the selected string from the list.
          
         
         String selection = (String) deckList.getSelectedValue();
         
         // Store the selected string in the text field.
         selectedDeck.setText(selection);
      }
   }
   
   private class TruckListener implements ListSelectionListener
   {
      public void valueChanged(ListSelectionEvent e)
      {
         // Get the selected string from the list.
         String selection = (String) truckList.getSelectedValue();
         
         
         
         // Store the selected string in the text field.
         selectedTruck.setText(selection);
      }
      
    
   }
   
     private class WheelListener implements ListSelectionListener
   {
      public void valueChanged(ListSelectionEvent e)
      {
         // Get the selected string from the list.
         String selection = (String) wheelList.getSelectedValue();
         
         // Store the selected string in the text field.
         selectedWheel.setText(selection);
      }
      
    
   }
     
      private class ExtraListener implements ListSelectionListener
   {
      public void valueChanged(ListSelectionEvent e)
      {
         // Get the selected string from the list.
         String selection = (String) extraList.getSelectedValue();
         
         // Store the selected string in the text field.
         selectedExtra.setText(selection);
      }
      
    
   }
       

   /**
    *  The main method creates an instance of the SkateBoard
    *  class, which causes it to display its window. 
    */
   
   public static void main(String[] args)
   {
      new SkateBoard();
   }
}
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cproud21 is offline Offline
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since Sep 2008

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