Factura En Netbeans

package factura;

/**
*
* @author An
*/
public class factura extends javax.swing.JFrame {

/** Creates new form factura */
public factura() {
initComponents();
}

/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by theForm Editor.
*/
@SuppressWarnings("unchecked")
//
private void initComponents() {

jTextField5 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
txtca2 = new javax.swing.JTextField();
txtca3 = new javax.swing.JTextField();jTextField6 = new javax.swing.JTextField();
txtca1 = new javax.swing.JTextField();
txtp3 = new javax.swing.JTextField();
txtt1 = new javax.swing.JTextField();
txtp1 = new javax.swing.JTextField();
txtp2 = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
txttotal = new javax.swing.JTextField();
txtiva = newjavax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
txtsubt = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
jLabel11 = new javax.swing.JLabel();
jLabel10 = new javax.swing.JLabel();
jLabel9 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
txtt2 = new javax.swing.JTextField();
jTextField1 = new javax.swing.JTextField();
txtt3 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jLabel12 = new javax.swing.JLabel();
jPanel1 = newjavax.swing.JPanel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jLabel13 = new javax.swing.JLabel();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setBackground(new java.awt.Color(102, 204, 255));

jTextField5.setBackground(new java.awt.Color(102, 255, 255));jTextField4.setBackground(new java.awt.Color(102, 255, 255));

jTextField3.setBackground(new java.awt.Color(102, 255, 255));

txtca2.setBackground(new java.awt.Color(102, 255, 255));

txtca3.setBackground(new java.awt.Color(102, 255, 255));

jTextField6.setBackground(new java.awt.Color(102, 255, 255));

txtca1.setBackground(new java.awt.Color(102, 255, 255));txtp3.setBackground(new java.awt.Color(102, 255, 255));
txtp3.addFocusListener(new java.awt.event.FocusAdapter() {
public void focusLost(java.awt.event.FocusEvent evt) {
txtp3FocusLost(evt);
}
});

txtt1.setBackground(new java.awt.Color(102, 255, 255));
txtt1.setEditable(false);
txtt1.setText("0");txtp1.setBackground(new java.awt.Color(102, 255, 255));
txtp1.addFocusListener(new java.awt.event.FocusAdapter() {
public void focusLost(java.awt.event.FocusEvent evt) {
txtp1FocusLost(evt);
}
});

txtp2.setBackground(new java.awt.Color(102, 255, 255));
txtp2.addFocusListener(new java.awt.event.FocusAdapter() {public void focusLost(java.awt.event.FocusEvent evt) {
txtp2FocusLost(evt);
}
});

jLabel1.setBackground(new java.awt.Color(102, 0, 0));
jLabel1.setFont(new java.awt.Font("Monotype Corsiva", 0, 18)); // NOI18N
jLabel1.setForeground(new java.awt.Color(102, 0, 0));
jLabel1.setText("ALMACEN \"MI FIESTA\"");...