Programa Signos Zodiacales...

[kingjav]

Saludos, tengo una asignación de la uni donde debo crear un Applet que lea en un TextField la fecha de nacimiento (formato dd/MM/yyyy) de una persona, valide si fue ingresada correctamente y decir su Signo Zodiacal. La verdad me resulta bastante complicado. Aquí les dejo mi Código Fuente realizado hasta ahora, a ver si alguien me puede ayudar a terminarlo o darme alguna buena recomendación.

Código:

package signozod;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;
import java.util.Calendar;
import java.util.GregorianCalendar;

public class NewJApplet extends javax.swing.JApplet {

    /** Initializes the applet NewJApplet */
    @Override
    public void init() {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(NewJApplet.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(NewJApplet.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(NewJApplet.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(NewJApplet.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the applet */
        try {
            java.awt.EventQueue.invokeAndWait(new Runnable() {

                @Override
                public void run() {
                    initComponents();
                }
            });
        } catch (Exception ex) {
        }
    }


    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        jTextField1 = new javax.swing.JTextField();
        Btn_Ver = new javax.swing.JButton();
        Signo = new javax.swing.JLabel();
        Signo2 = new javax.swing.JTextField();

        jTextField1.setText("dd/MM/aaaa");

        Btn_Ver.setText("jButton1");
        Btn_Ver.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                Btn_VerActionPerformed(evt);
            }
        });

        Signo2.setText("jTextField2");

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(121, 121, 121)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 125, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(158, 158, 158)
                        .addComponent(Signo))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(139, 139, 139)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(Signo2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(Btn_Ver))))
                .addContainerGap(133, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(32, 32, 32)
                .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(38, 38, 38)
                .addComponent(Btn_Ver)
                .addGap(47, 47, 47)
                .addComponent(Signo)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(Signo2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(92, Short.MAX_VALUE))
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
    }// </editor-fold>                        

    private void Btn_VerActionPerformed(java.awt.event.ActionEvent evt) {                                        
        try {
            SimpleDateFormat formateador = new SimpleDateFormat("dd/MM/yyyy");
            {
                formateador.setLenient(false);
            }

            try {
                Date fecha = formateador.parse(jTextField1.getText());
            } catch (ParseException e)
              {
                    JOptionPane.showMessageDialog(Btn_Ver, "ERROR: El formato de fecha es erroneo.");}
                           
                Calendar fecha = Calendar.getInstance();
                int dia = fecha.get(Calendar.DAY_OF_MONTH);
                int mes = fecha.get(Calendar.MONTH);
     
       Date AriesI = formateador.parse("21/03/yyyy");
       Date AriesF = formateador.parse("20/04/yyyy");
       Date TauroI = formateador.parse("21/04/yyyy");
       Date TauroF = formateador.parse("21/05/yyyy");
       Date GeminisI = formateador.parse("22/05/yyyy");
       Date GeminisF = formateador.parse("21/06/yyyy");
       Date CancerI = formateador.parse("22/06/yyyy");
       Date CancerF = formateador.parse("23/07/yyyy");
       Date LeoI = formateador.parse("24/07/yyyy");
       Date LeoF = formateador.parse("23/08/yyyy");
       Date VirgoI = formateador.parse("24/08/yyyy");
       Date VirgoF = formateador.parse("23/09/yyyy");
       Date LibraI = formateador.parse("24/09/yyyy");
       Date LibraF = formateador.parse("23/10/yyyy");
       Date EscorpioI = formateador.parse("24/10/yyyy");
       Date EscorpioF = formateador.parse("22/11/yyyy");
       Date SagitarioI = formateador.parse("23/11/yyyy");
       Date SagitarioF = formateador.parse("21/12/yyyy");
       Date CapricornioI = formateador.parse("22/12/yyyy");
       Date CapricornioF = formateador.parse("20/01/yyyy");
       Date AcuarioI = formateador.parse("21/01/yyyy");
       Date AcuarioF = formateador.parse("19/02/yyyy");
       Date PiscisI = formateador.parse("20/02/yyyy");
       Date PiscisF = formateador.parse("20/03/yyyy");
       
                
    switch(mes)
    {
        case 1: //Case para Aries
            if (fecha.after(AriesI) && fecha.before(AriesF))
                Signo2.setText("Aries");
                break;
        case 2: //Case para Tauro
            if (fecha.after(TauroI) && fecha.before(TauroF))
                Signo2.setText("Tauro");
                break;
    }

                        // TODO add your handling code here: 
        } catch (ParseException ex) {
            Logger.getLogger(NewJApplet.class.getName()).log(Level.SEVERE, null, ex);
        }
    }                                       

    // Variables declaration - do not modify                     
    private javax.swing.JButton Btn_Ver;
    private javax.swing.JLabel Signo;
    private javax.swing.JTextField Signo2;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JTextField jTextField1;
    // End of variables declaration                   
}

PD: En el switch, solo llega al Case 3, pues como no me funcionaba no quise seguir escribiendo código innecesario. Espero alguien pueda ayudarme, muchas gracias :)