my{} JVA my New home app

/*
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 */
package jmynewhome;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
/**
 *
 * @author class
 */


public class JMyNewHome extends JFrame implements ItemListener
{
    final int WIDTH = 325;
    final int HEIGHT = 400;
    
    final int ASPEN_PRICE = 100000;
    final int BRITTANY_PRICE = 120000;
    final int COLONIAL_PRICE = 180000;
    final int DARTMOOR_PRICE = 250000;
    
    final int PRICE_PER_BEDROOM = 10500;
    
    final int PRICE_PER_CAR = 7775;
    
    JLabel appTitle = new JLabel("My New Home order calculator");
    JLabel priceLabel = new JLabel("Total Price:");
    JLabel[] separator = new JLabel[4];
    
    JTextField price = new JTextField(8);
    
    ButtonGroup models = new ButtonGroup();
    JRadioButton aspen = new JRadioButton("Aspen $" + ASPEN_PRICE);
    JRadioButton brittany = new JRadioButton("Brittany $" + BRITTANY_PRICE);
    JRadioButton colonial = new JRadioButton("Colonial $" + COLONIAL_PRICE);
    JRadioButton dartmoor = new JRadioButton("Dartmoor $" + DARTMOOR_PRICE);
    
    ButtonGroup bedrooms = new ButtonGroup();
    JRadioButton twoRooms = new JRadioButton("Two Bedrooms $" + (2 * PRICE_PER_BEDROOM));
    JRadioButton threeRooms = new JRadioButton("Three Bedrooms $" + (3 * PRICE_PER_BEDROOM));
    JRadioButton fourRooms = new JRadioButton("Four Bedrooms $" + (4 * PRICE_PER_BEDROOM));
    
    ButtonGroup garage = new ButtonGroup();
    JRadioButton zeroCars = new JRadioButton("No Garage $" + (0 * PRICE_PER_CAR));
    JRadioButton oneCars = new JRadioButton("One Car Garage $" + (1 * PRICE_PER_CAR));
    JRadioButton twoCars = new JRadioButton("Two Car Garage $" + (2 * PRICE_PER_CAR));
    JRadioButton threeCars = new JRadioButton("Three Car Garage $" + (3 * PRICE_PER_CAR));
    
    int totalPrice = 0;
    
    public JMyNewHome()
    {
        super("My New Home");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(WIDTH, HEIGHT);
        setResizable(false);
        setLayout(new FlowLayout());
        
        for(int i = 0; i < separator.length; i++)
            separator[i] = new JLabel("---------------------------------------------------");
        
        add(appTitle);
        
        add(separator[0]);
        
        add(aspen);
        add(brittany);
        add(colonial);
        add(dartmoor);
        aspen.addItemListener(this);
        brittany.addItemListener(this);
        colonial.addItemListener(this);
        dartmoor.addItemListener(this);
        
        add(separator[1]);
        
        add(twoRooms);
        add(threeRooms);
        add(fourRooms);
        twoRooms.addItemListener(this);
        threeRooms.addItemListener(this);
        fourRooms.addItemListener(this);
        
        add(separator[2]); 
        
        add(zeroCars);
        add(oneCars);
        add(twoCars);
        add(threeCars);
        zeroCars.addItemListener(this);
        oneCars.addItemListener(this);
        twoCars.addItemListener(this);
        threeCars.addItemListener(this);
        
        add(separator[3]);
        
        add(priceLabel);
        add(price);
        price.setEditable(false);
        
        groupButtons();
        setLocationRelativeTo(null); // Starting in the corner bugs me
        
        setVisible(true);
    }
    
    public void itemStateChanged(ItemEvent event)
    {
        totalPrice = 0;
        
        Object source = event.getSource();
        
        if(aspen.isSelected())
            totalPrice += ASPEN_PRICE;
        if(brittany.isSelected())
            totalPrice += BRITTANY_PRICE;
        if(colonial.isSelected())
            totalPrice += COLONIAL_PRICE;
        if(dartmoor.isSelected())
            totalPrice += DARTMOOR_PRICE;
        
        if(twoRooms.isSelected())
            totalPrice += (2 * PRICE_PER_BEDROOM);
        if(threeRooms.isSelected())
            totalPrice += (3 * PRICE_PER_BEDROOM);
        if(fourRooms.isSelected())
            totalPrice += (4 * PRICE_PER_BEDROOM);
        
        if(oneCars.isSelected())
            totalPrice += PRICE_PER_CAR;
        if(twoCars.isSelected())
            totalPrice += (2 * PRICE_PER_CAR);
        if(threeCars.isSelected())
            totalPrice += (3 * PRICE_PER_CAR);
            
        price.setText("$" + totalPrice);
    }
    
    public void groupButtons()
    {
        models.add(aspen);
        models.add(brittany);
        models.add(colonial);
        models.add(dartmoor);
        
        bedrooms.add(twoRooms);
        bedrooms.add(threeRooms);
        bedrooms.add(fourRooms);
        
        garage.add(zeroCars);
        garage.add(oneCars);
        garage.add(twoCars);
        garage.add(threeCars);
    }
    public static void main(String[] args)
    {
        JMyNewHome aHome = new JMyNewHome();
    }
}