Applet palabras contador

Logica ---> Cadena.

Presentacion ---> Formulario.

Descarga... click acá

Logica --->Cadena

•  /*
   * To change this template, choose Tools | Templates
   * and open the template in the editor.
   */
  
  package Logica;
  
  import javax.swing.JOptionPane;
  
  /**
   *
   * @author microsoft
   */
  public class Cadena {
  
      private String frase;
  
      public Cadena(String frase) {
          this.frase = frase;
      }
      public Cadena() {
  
      }
  
      public String getFrase() {
          return frase;
      }
  
      public void setFrase(String frase) {
          this.frase = frase;
      }
  
      public int contadordeletras ()
      {
          int contador=0,longitud;
  
          longitud=frase.length();
  
          for(int i=0;i<longitud;i++)
          {
              if(frase.charAt(i) >= 'a' && frase.charAt(i)<='z' ||frase.charAt(i) >= 'A' && frase.charAt(i)<='Z')
              {
                  if(frase.charAt(i) != 'a'&&frase.charAt(i)!='e'&&frase.charAt(i)!='i'&&frase.charAt(i)!='o'&&frase.charAt(i)!='u' && frase.charAt(i)!= 'A'&&frase.charAt(i)!='E'&&frase.charAt(i)!='I'&&frase.charAt(i)!='O'&&frase.charAt(i)!='U')
                  {
                      contador++;
                  }                   
               }
  
          }
          return contador;
      }
  
      public boolean palindromo()
      {
          int largo;
          largo = frase.length();
          String revez = "";
          for (int j=(largo - 1) ; j>=0; j--)
          {
              revez = revez + frase.charAt(j);
          }
          if (revez.equals(frase))
          {
              return (true);
          }else{
              return (false);
          }
       }
  }
  

Presentacion--->Formulario

• /*
   * To change this template, choose Tools | Templates
   * and open the template in the editor.
   */
  
  /*
   * Formulario.java
   *
   * Created on 1/03/2011, 10:39:12 AM
   */
  
  package Presentacion;
  
  /**
   *
   * @author microsoft
   */
  import Logica.Cadena;
  import javax.swing.JOptionPane;
  public class Formulario extends java.applet.Applet {
  
      Cadena obj1 = new Cadena();
      /** Initializes the applet Formulario */
      public void init() {
  
              try {
                  this.setSize(520,300);
              java.awt.EventQueue.invokeAndWait(new Runnable() {
                  public void run() {
                      initComponents();
                  }
              });
          } catch (Exception ex) {
              ex.printStackTrace();
          }
      }
  
      /** This method is called from within the init() method to
       * initialize the form.
       * WARNING: Do NOT modify this code. The content of this method is
       * always regenerated by the Form Editor.
       */
      // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
      private void initComponents() {
  
          jPanel1 = new javax.swing.JPanel();
          lbl_titulo = new javax.swing.JLabel();
          btn_contador = new javax.swing.JButton();
          txt_frase = new javax.swing.JTextField();
          lbl_letrero = new javax.swing.JLabel();
          btn_palindromo = new javax.swing.JButton();
  
          lbl_titulo.setFont(new java.awt.Font("Comic Sans MS", 1, 24)); // NOI18N
          lbl_titulo.setText(".:: EJERCICIO CON FRASES ::.");
  
          btn_contador.setText("CONTAR LETRAS");
          btn_contador.addActionListener(new java.awt.event.ActionListener() {
              public void actionPerformed(java.awt.event.ActionEvent evt) {
                  btn_contadorActionPerformed(evt);
              }
          });
  
          lbl_letrero.setText("Frase :");
  
          btn_palindromo.setText("VERIFICAR SI ES PALINDROMO");
          btn_palindromo.addActionListener(new java.awt.event.ActionListener() {
              public void actionPerformed(java.awt.event.ActionEvent evt) {
                  btn_palindromoActionPerformed(evt);
              }
          });
  
          javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
          jPanel1.setLayout(jPanel1Layout);
          jPanel1Layout.setHorizontalGroup(
              jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
              .addGroup(jPanel1Layout.createSequentialGroup()
                  .addGap(73, 73, 73)
                  .addComponent(lbl_letrero)
                  .addGap(38, 38, 38)
                  .addComponent(txt_frase, javax.swing.GroupLayout.PREFERRED_SIZE, 329, javax.swing.GroupLayout.PREFERRED_SIZE)
                  .addContainerGap(40, Short.MAX_VALUE))
              .addGroup(jPanel1Layout.createSequentialGroup()
                  .addGap(53, 53, 53)
                  .addComponent(lbl_titulo)
                  .addContainerGap(74, Short.MAX_VALUE))
              .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                  .addContainerGap(129, Short.MAX_VALUE)
                  .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                      .addComponent(btn_palindromo, javax.swing.GroupLayout.PREFERRED_SIZE, 265, javax.swing.GroupLayout.PREFERRED_SIZE)
                      .addComponent(btn_contador, javax.swing.GroupLayout.PREFERRED_SIZE, 265, javax.swing.GroupLayout.PREFERRED_SIZE))
                  .addGap(120, 120, 120))
          );
          jPanel1Layout.setVerticalGroup(
              jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
              .addGroup(jPanel1Layout.createSequentialGroup()
                  .addGap(39, 39, 39)
                  .addComponent(lbl_titulo, javax.swing.GroupLayout.PREFERRED_SIZE, 52, javax.swing.GroupLayout.PREFERRED_SIZE)
                  .addGap(41, 41, 41)
                  .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                      .addComponent(lbl_letrero)
                      .addComponent(txt_frase, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                  .addGap(49, 49, 49)
                  .addComponent(btn_contador)
                  .addGap(32, 32, 32)
                  .addComponent(btn_palindromo)
                  .addContainerGap(32, Short.MAX_VALUE))
          );
  
          javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
          this.setLayout(layout);
          layout.setHorizontalGroup(
              layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
              .addGroup(layout.createSequentialGroup()
                  .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)
              .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
          );
      }// </editor-fold>//GEN-END:initComponents
  
      private void btn_contadorActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn_contadorActionPerformed
          obj1.setFrase(txt_frase.getText());
          JOptionPane.showMessageDialog(null, "La palabra tiene " + obj1.contadordeletras() + " letras") ;
      }//GEN-LAST:event_btn_contadorActionPerformed
  
      private void btn_palindromoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn_palindromoActionPerformed
           obj1.setFrase(txt_frase.getText());
          if (obj1.palindromo())
          {
              JOptionPane.showMessageDialog(null, "La palabra es PALINDROMA");
          }else{
               JOptionPane.showMessageDialog(null, "La palabra  NO es PALINDROMA");
          }
      }//GEN-LAST:event_btn_palindromoActionPerformed
  
  
      // Variables declaration - do not modify//GEN-BEGIN:variables
      private javax.swing.JButton btn_contador;
      private javax.swing.JButton btn_palindromo;
      private javax.swing.JPanel jPanel1;
      private javax.swing.JLabel lbl_letrero;
      private javax.swing.JLabel lbl_titulo;
      private javax.swing.JTextField txt_frase;
      // End of variables declaration//GEN-END:variables
  
  }