Passing Array element to a list

[cproud21]

I have a GUI app which in which I need to pass a value from an array to a List... here is what I have... The problem occurs when I try to pass the array element to the ActionListener...

im not sure exactly how to do it...

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

public class SkateBoard extends JFrame
{
private JPanel deckPanel;
private JPanel selectedDeckPanel;
private JList deckList;
private JTextField selectedDeck;
private JLabel deckLabel;

private JPanel truckPanel;
private JPanel selectedTruckPanel;
private JList truckList;
private JTextField selectedTruck;
private JLabel truckLabel;

private JPanel wheelPanel;
private JPanel selectedWheelPanel;
private JList wheelList;
private JTextField selectedWheel;
private JLabel wheelLabel;

private JPanel extraPanel;
private JPanel selectedExtraPanel;
private JList extraList;
private JTextField selectedExtra;
private JLabel extraLabel;
public double deckPrice;
public double truckPrice;
public double wheelPrice;
public double extraPrice;
private JButton button;
private JPanel buttonPanel;


private JTextField total;

public String[] decks = {"The Master Thrasher", "The Dictator", "The Street King"};
public String[] trucks = { "7.75 inch axle", "8-inch axle", "8.5 inch axle"};
public String[] wheels = { "51 mm", "55 mm", "58 mm", "61 mm"};
public String[] extras = { "Grip Tape", "Bearings", "Riser Pads", "Nuts and Bolts Kit"};

private JLabel totalLabel;
private JButton calcButton;

public double totalPrice = deckPrice + truckPrice + wheelPrice + extraPrice;

public SkateBoard()
{

super("Build Your Custom SkateBoard");

setSize(200,200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


setLayout(new GridLayout(3,4));

buildDeckPanel();
buildTruckPanel();
buildWheelPanel();
buildExtraPanel();
buildSelectedDeckPanel();
buildSelectedTruckPanel();
buildSelectedWheelPanel();
buildSelectedExtraPanel();
buildButtonPanel();

add(deckPanel);
add(truckPanel);
add(wheelPanel);
add(extraPanel);
add(selectedDeckPanel);
add(selectedTruckPanel);
add(selectedWheelPanel);
add(selectedExtraPanel);
add(buttonPanel);

pack();
setVisible(true);



}

public double getTotal()
{
double totalPrice;

totalPrice = deckPrice + truckPrice + wheelPrice + extraPrice;



return totalPrice;
}



private void buildDeckPanel()
{

deckPanel = new JPanel();


deckList = new JList(decks);


deckList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

deckList.addListSelectionListener(new DeckListener());


deckPanel.add(deckList);
}
private void buildTruckPanel()
{

truckPanel = new JPanel();


truckList = new JList(trucks);


truckList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);


truckList.addListSelectionListener(new TruckListener());


truckPanel.add(truckList);
}

private void buildWheelPanel()
{

wheelPanel = new JPanel();


wheelList = new JList(wheels);

.
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);
}




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 void buildButtonPanel()
{
buttonPanel = new JPanel();
calcButton = new JButton("Calculate");
calcButton.addActionListener(new CalcButtonListener());
buttonPanel.add(calcButton);
}

public class CalcButtonListener implements ActionListener
{
public void actionPerformed(ActionEvent e)
{


JOptionPane.showMessageDialog(null, "Subtotal: $" +
totalPrice);
}
}
public class DeckListener implements ListSelectionListener
{
public void valueChanged(ListSelectionEvent e)
{
// Get the selected string from the list.


String selection = (String) deckList.getSelectedValue();

if (selection == decks[0])
deckPrice = 60;
if (selection == decks[1])
deckPrice = 45;
if (selection == decks[2])
deckPrice = 50;
selectedDeck.setText(selection);

}

}

public class TruckListener implements ListSelectionListener
{
public void valueChanged(ListSelectionEvent e)
{
// Get the selected string from the list.
String selection = (String) truckList.getSelectedValue();


if (selection == trucks[0])
truckPrice = 35;
if (selection == trucks[1])
truckPrice = 40;
if (selection == trucks[2])
truckPrice = 45;

// Store the selected string in the text field.
selectedTruck.setText(selection);
}

}

public class WheelListener implements ListSelectionListener
{
public void valueChanged(ListSelectionEvent e)
{
// Get the selected string from the list.
String selection = (String) wheelList.getSelectedValue();

if (wheels[0].isSelected)
wheelPrice = 60;
if (selection == wheels[1])
wheelPrice = 45;
if (selection == wheels[2])
wheelPrice = 50;
// Store the selected string in the text field.
selectedWheel.setText(selection);
}


}

public class ExtraListener implements ListSelectionListener
{

public void valueChanged(ListSelectionEvent e)
{
// Get the selected string from the list.
String selection = (String) extraList.getSelectedValue();

if (selection == extras[0])
extraPrice = 60;
if (selection == extras[1])
extraPrice = 45;
if (selection == extras[2])
extraPrice = 50;
// Store the selected string in the text field.
selectedExtra.setText(selection);
}


}


public static void main(String[] args)
{
new SkateBoard();

}

}

[christiangirl]

is the error on f(wheels[0].isSelcted)?

[christiangirl]

is the error on getting the total?

[cproud21]

its on gettting the total even though that line was wrong ask well..

[cproud21]

i am getting warnings in the

(selection == decks[0])
deckPrice = 60;
if (selection == decks[1])
deckPrice = 45;
if (selection == decks[2])
deckPrice = 50;

lines but do not know another way to take the selected items and assign them a price...

[LDeArm]

You don't need the getTotal section. I deleted it and rewrote the Calculate action like this and it returned the Total, Subtotal and Tax amounts...

public class CalcButtonListener implements ActionListener
{

public void actionPerformed(ActionEvent e)
{
double subtotal; // The order subtotal
double tax; // The amount of sales tax
double total; // The order total

// Calculate the subtotal.
subtotal = deckPrice + truckPrice + wheelPrice + extraPrice;

// Calculate the sales tax.
tax = subtotal * TAX_RATE;

// Calculate the total.
total = subtotal + tax;

// Create a DecimalFormat object to format
// the total as a dollar amount.
DecimalFormat dollar = new DecimalFormat("0.00");

// Display the charges.
JOptionPane.showMessageDialog(null, "Subtotal: $" +
dollar.format(subtotal) + "\n" +
"Tax: $" + dollar.format(tax) + "\n" +
"Total: $" + dollar.format(total));
}
}

Also, you need to fix your wheel listener like so:

public class WheelListener implements ListSelectionListener
{
public void valueChanged(ListSelectionEvent e)
{
// Get the selected string from the list.
String selection = (String) wheelList.getSelectedValue();

if ( selection == wheels[0])
wheelPrice = 60;
if (selection == wheels[1])
wheelPrice = 45;
if (selection == wheels[2])
wheelPrice = 50;
// Store the selected string in the text field.
selectedWheel.setText(selection);
}


}

Also, you might want to remove the period from this section in the BuildWheelsPanel:

wheelList = new JList(wheels);

.
wheelList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

That should do it for you.