HI, I need help with my code. Basically I need to make a vending machine GUI in

Question

HI, I need help with my code. Basically I need to make a vending machine GUI in Java. I put the conditions it has to meet below. All help is appreciated thanks. The GUI's are supposed to look similiar to the ones below.

First, when the program starts, the user is allowed to select the Vending Machine they wish to use from a drop down selection box. See figure below: Vending Machine selecsan LlalX Please select a vending Machine Once a machine is selected, the user can then enter the amount of money they want to spend into an input dialog box. See figure below: Input Money mcney into the machi

Explanation / Answer

import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.ImageIcon;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;
import javax.swing.event.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

public class Vending extends JFrame {

   public class itemChooser implements KeyListener {
       public void keyPressed(KeyEvent e){
           switch(e.getKeyCode())
           {
               case KeyEvent.VK_W:
                   goodyTextButtons[0].doClick();
                   break;
               case KeyEvent.VK_S:
                   goodyTextButtons[1].doClick();
                   break;
               case KeyEvent.VK_P:
                   goodyTextButtons[2].doClick();
                   break;
               case KeyEvent.VK_C:
                   goodyTextButtons[3].doClick();
                   break;
               default:
                   break;
           }
       }
      
       public void keyReleased(KeyEvent e){}
       public void keyTyped(KeyEvent e){}
   }
  
   public class focusSet extends MouseAdapter {
       public void mouseClicked(MouseEvent e) {
           requestFocusInWindow();
           System.out.println("FOCUS");
       }
   }

// ActionListener class to display Goody prices
private class DisplayPricesActionListener implements ActionListener{
final JTextField priceField;   // Where to diplay the price
final JButton[] goodyImages;   // What button objects can be clicked
// These are in the same order as the
// goodyImageNames & goodyPrices

public DisplayPricesActionListener(JTextField priceField,
JButton[] goodyImages) {
super();
this.priceField = priceField;
this.goodyImages = goodyImages;
}

@Override
public void actionPerformed(ActionEvent e) {
for (int i=0; i<goodyNames.length; i++){   // Check which button was clicked
// and display approprate price
if (e.getSource().equals(goodyImages[i])){
DecimalFormat df = new DecimalFormat("#.00##");
String priceToDisplay = df.format(goodyPrices[i]);
priceField.setText("$" + priceToDisplay);
}
}  
}
}

// ActionListener class to display "here is your goody" when
// the right price amount is entered
private class PayForGoodyActionListener implements ActionListener {

final JButton[] selectButtons;       // Array of buttons to choose goodies
final JButton whereButton;
final JTextField inputPriceTF;       // Text Field where money is entered
final JTextField outputChangeTF;   // Text Field where "here is your goody is displayed"

public PayForGoodyActionListener(JButton[] selectButtons,
JButton whereButton,
JTextField inputPriceTF, JTextField outputChangeTF) {
super();
this.whereButton = whereButton;
this.selectButtons = selectButtons;
this.inputPriceTF = inputPriceTF;
this.outputChangeTF = outputChangeTF;
}

@Override
public void actionPerformed(ActionEvent e) {
int selectedButtonPos = -1;
for (int i=0; i<selectButtons.length; i++){
if (e.getSource().equals(selectButtons[i])){
selectedButtonPos = i;
break;
}
}
String priceEntered = inputPriceTF.getText();
double inputMoney = 0.0;
try{
inputMoney = Double.parseDouble(priceEntered);
double change = inputMoney - goodyPrices[selectedButtonPos];
if (change >= 0.0) {
whereButton.setText("Here is your " + goodyTips[selectedButtonPos]);
outputChangeTF.setText("Your Change is: " + change);
}
else
outputChangeTF.setText("Not enough for " + goodyTips[selectedButtonPos]);
inputPriceTF.setText("Enter Money Here ..");
} catch (Exception exception) {}
}

}

final int goodyType = 4;
final String[] goodyImageNames = {
"water-bottle.jpg",
"soda.jpg",
"pretzel.jpg",
"chocalate-bar.jpg"
};
final String[] goodyNames = { "W", "S", "P", "C" };
final String[] goodyTips = {
"Water Bottle",
"Soda",
"Pretzel",
"Chocalate Bar"
};
final double[] goodyPrices = {
1.25,
1.50,
1.75,
2.00
};
   public static JButton[] goodyTextButtons;

public Vending(String s) {
super(s);
       itemChooser itemSelect = new itemChooser();
       focusSet focus = new focusSet();
       addMouseListener(focus);
       addKeyListener(itemSelect);
// Image of a dollar bill
int dollarImgWidth = 160, dollarImgHeight = 70;
ImageIcon dollarImage1 = new ImageIcon("one-dollar.jpg");
ImageIcon dollarImage2 = new ImageIcon(dollarImage1.getImage().getScaledInstance(
(int)dollarImgWidth, (int)dollarImgHeight, java.awt.Image.SCALE_SMOOTH));          
JButton JButton(dollarImage2);

// The panel of price
JPanel pPrice = new JPanel();
pPrice.setLayout(new BoxLayout(pPrice, BoxLayout.Y_AXIS));
JPanel pPriceText = new JPanel();
pPriceText.setLayout(new FlowLayout());
JLabel priceTextLabel = new JLabel("Price");
JTextField amountTextField = new JTextField("$1.25");
pPriceText.add(priceTextLabel);
pPriceText.add(amountTextField);
JTextField enterMoneyTextField = new JTextField("Enter Money Here ..");
pPrice.add(pPriceText);
pPrice.add(enterMoneyTextField);

// The panel of "return amount"
JTextField returnAmountTextField = new JTextField("Return amount ..");

// The "choose one" panel
JPanel pChooseOne = new JPanel();
pChooseOne.setLayout(new GridLayout(4,1));
pChooseOne.setCursor(new Cursor(Cursor.HAND_CURSOR));
goodyTextButtons = new JButton[goodyType];
pChooseOne.setBorder(new TitledBorder("Choose one"));

// Add the above four panels together
JPanel p1 = new JPanel();
p1.setLayout(new BoxLayout(p1, BoxLayout.Y_AXIS));
p1.setPreferredSize(new Dimension (200, 400));
p1.add(oneDollarBotton);
p1.add(pPrice);
p1.add(pChooseOne);
p1.add(returnAmountTextField);

// The panel of goodies
JPanel pGoodies = new JPanel();
pGoodies.setLayout(new GridLayout(4,1,0,0));
pGoodies.setBorder(new TitledBorder("Goodies"));
((TitledBorder) pGoodies.getBorder()).setTitleColor(Color.BLACK);
int goodyImgWidth = 100, goodyImgHeight = 100;
JButton[] goodyImageButtons = new JButton[goodyType];
DisplayPricesActionListener displayPriceListener = new DisplayPricesActionListener(amountTextField, goodyImageButtons);
for (int i = 0; i < goodyImageButtons.length; i++) {

ImageIcon image1 = new ImageIcon(goodyImageNames[i]);
ImageIcon image2 = new ImageIcon(image1.getImage().getScaledInstance(
(int)goodyImgWidth, (int)goodyImgHeight, java.awt.Image.SCALE_SMOOTH));          
goodyImageButtons[i] = new JButton(image2);
goodyImageButtons[i].setContentAreaFilled(false);
goodyImageButtons[i].setBorderPainted(true);
pGoodies.add(goodyImageButtons[i]);
// ActionListener attached to each button
goodyImageButtons[i].addActionListener(displayPriceListener);
}

// The panel of "where you get your item"
JButton whereButton = new JButton("This is where you get your item!");
whereButton.setPreferredSize(new Dimension(250, 100));

// Add everything onto the frame
this.add(pGoodies, BorderLayout.CENTER);
this.add(p1, BorderLayout.EAST);
this.add(whereButton, BorderLayout.SOUTH);

// the action listener
PayForGoodyActionListener payGoodyListener =
new PayForGoodyActionListener(goodyTextButtons, whereButton,
enterMoneyTextField, returnAmountTextField);
for (int i = 0; i < goodyType; i++) {
goodyTextButtons[i] = new JButton(goodyNames[i]);
goodyTextButtons[i].setToolTipText(goodyTips[i]);
// ActionListener attached to each button
goodyTextButtons[i].addActionListener(payGoodyListener);
           switch(goodyNames[i])
           {
               case("W"):
                   goodyTextButtons[i].setMnemonic(KeyEvent.VK_W);
                   break;
               case("S"):
                   goodyTextButtons[i].setMnemonic(KeyEvent.VK_S);
                   break;
               case("P"):
                   goodyTextButtons[i].setMnemonic(KeyEvent.VK_P);
                   break;
               case("C"):
                   goodyTextButtons[i].setMnemonic(KeyEvent.VK_C);
                   break;
               default:
                   break;
           }
pChooseOne.add(goodyTextButtons[i]);  
}

}

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Vending v = new Vending("THE FRONT VIEW OF A VENDING MACHINE");
v.setSize(400, 800);
v.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
v.setVisible(true);
       v.setFocusable(true);
}

}

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