Java Codigo De Maquina venDedora

*
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/*
* VendingMachine1.java
*
* Created on Oct 23, 2011, 3:47:18 PM
*/
package VendingMachine;

import javax.swing.JOptionPane;

/**
*
* @author Marco
*/
public class VendingMachine1 extends javax.swing.JFrame {
private double ToPay;
private double Ammount;private double Change;


public VendingMachine1() {
initComponents();
}

private void initComponents() {

jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
ammountEntered = new javax.swing.JLabel();
changeAmmount = newjavax.swing.JLabel();
collectChange = new javax.swing.JButton();
fiftyCents = new javax.swing.JLabel();
onePeso = new javax.swing.JLabel();
twoPesos = new javax.swing.JLabel();
fivePesos = new javax.swing.JLabel();
jLabel17 = new javax.swing.JLabel();
toPay = new javax.swing.JLabel();
sodaLemonade = new javax.swing.JButton();sodaOrange = new javax.swing.JButton();
sodaStrawberry = new javax.swing.JButton();
sodaPunch = new javax.swing.JButton();
jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
monedaCincuenta = new javax.swing.JButton();
monedaUno = new javax.swing.JButton();monedaDos = new javax.swing.JButton();
monedaCinco = new javax.swing.JButton();
buyButton = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Vending Machine");
setMaximizedBounds(new java.awt.Rectangle(0, 0, 516, 630));
setMinimumSize(newjava.awt.Dimension(516, 630));
getContentPane().setLayout(null);

jLabel2.setIcon(new javax.swing.ImageIcon("F:\\4to Semestre\\Programacion Concurrente\\NetBeans IDE\\VendingMachine\\Vending Machine\\Soda1.jpg"));
jLabel2.setText("jLabel2");
jLabel2.setToolTipText("Lemonade $5.00 pesos");
getContentPane().add(jLabel2);
jLabel2.setBounds(10,0, 120, 230);

jLabel3.setIcon(new javax.swing.ImageIcon("F:\\4to Semestre\\Programacion Concurrente\\NetBeans IDE\\VendingMachine\\Vending Machine\\Soda2.jpg"));
jLabel3.setText("jLabel3");
jLabel3.setToolTipText("Orange $5.50 pesos");
getContentPane().add(jLabel3);
jLabel3.setBounds(130, 0, 120, 230);

jLabel4.setIcon(newjavax.swing.ImageIcon("F:\\4to Semestre\\Programacion Concurrente\\NetBeans IDE\\VendingMachine\\Vending Machine\\Soda3.jpg"));
jLabel4.setText("jLabel4");
jLabel4.setToolTipText("$6.00 pesos");
getContentPane().add(jLabel4);
jLabel4.setBounds(250, 0, 120, 230);

jLabel5.setIcon(new javax.swing.ImageIcon("F:\\4to Semestre\\Programacion Concurrente\\NetBeansIDE\\VendingMachine\\Vending Machine\\Soda4.jpg"));
jLabel5.setText("jLabel5");
jLabel5.setToolTipText("$6.50 pesos");
getContentPane().add(jLabel5);
jLabel5.setBounds(370, 0, 120, 230);

ammountEntered.setFont(new java.awt.Font("Times New Roman", 1, 14));
ammountEntered.setForeground(new java.awt.Color(255, 255, 255));ammountEntered.setBorder(javax.swing.BorderFactory.createTitledBorder(""));
getContentPane().add(ammountEntered);
ammountEntered.setBounds(240, 470, 110, 30);

changeAmmount.setFont(new java.awt.Font("Times New Roman", 1, 14));
changeAmmount.setForeground(new java.awt.Color(255, 255, 255));
changeAmmount.setBorder(javax.swing.BorderFactory.createTitledBorder(""));...