Applet Contador de caracteres especiales

Logica ---> Cadena.

Presentacion ---> Formulario.

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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 parrafo = "";
     
      public int contadordecaracteresespeciales()
      {
          int contador=0,longitud;
          longitud=parrafo.length();
  
          for(int i=0;i<longitud;i++)
          {
             if(!(parrafo.charAt(i) >= 'a' && parrafo.charAt(i)<='z' ||parrafo.charAt(i) >= 'A' && parrafo.charAt(i)<='Z'))
             {
                  contador ++;
             }
          }
  
                 return contador;
      }
  
      public String getParrafo() {
          return parrafo;
      }
  
      public void setParrafo(String parrafo) {
          this.parrafo = parrafo;
      }
  
  } 

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();
          lbl_letrero = new javax.swing.JLabel();
          jScrollPane1 = new javax.swing.JScrollPane();
          ta_parrafo = new javax.swing.JTextArea();
  
          lbl_titulo.setFont(new java.awt.Font("Comic Sans MS", 1, 24));
          lbl_titulo.setText(".:: EJERCICIO CON FRASES ::.");
  
          btn_contador.setText("CONTAR CARACTERES ESPECIALES");
          btn_contador.addActionListener(new java.awt.event.ActionListener() {
              public void actionPerformed(java.awt.event.ActionEvent evt) {
                  btn_contadorActionPerformed(evt);
              }
          });
  
          lbl_letrero.setText("Parrafo :");
  
          ta_parrafo.setColumns(20);
          ta_parrafo.setRows(5);
          jScrollPane1.setViewportView(ta_parrafo);
  
          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(65, 65, 65)
                          .addComponent(lbl_titulo))
                      .addGroup(jPanel1Layout.createSequentialGroup()
                          .addGap(33, 33, 33)
                          .addComponent(lbl_letrero)
                          .addGap(48, 48, 48)
                          .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 356, javax.swing.GroupLayout.PREFERRED_SIZE)))
                  .addContainerGap(43, Short.MAX_VALUE))
              .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                  .addContainerGap(145, Short.MAX_VALUE)
                  .addComponent(btn_contador, javax.swing.GroupLayout.PREFERRED_SIZE, 265, javax.swing.GroupLayout.PREFERRED_SIZE)
                  .addGap(113, 113, 113))
          );
          jPanel1Layout.setVerticalGroup(
              jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
              .addGroup(jPanel1Layout.createSequentialGroup()
                  .addGap(40, 40, 40)
                  .addComponent(lbl_titulo, javax.swing.GroupLayout.PREFERRED_SIZE, 52, javax.swing.GroupLayout.PREFERRED_SIZE)
                  .addGap(40, 40, 40)
                  .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                      .addGroup(jPanel1Layout.createSequentialGroup()
                          .addComponent(lbl_letrero)
                          .addContainerGap())
                      .addGroup(jPanel1Layout.createSequentialGroup()
                          .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                          .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 31, Short.MAX_VALUE)
                          .addComponent(btn_contador)
                          .addGap(29, 29, 29))))
          );
  
          javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
          this.setLayout(layout);
          layout.setHorizontalGroup(
              layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
              .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
          );
          layout.setVerticalGroup(
              layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
              .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
          );
      }// </editor-fold>//GEN-END:initComponents
  
      private void btn_contadorActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn_contadorActionPerformed
         
          obj1.setParrafo(ta_parrafo.getText());
          JOptionPane.showMessageDialog(null, "El parrafo tiene " + obj1.contadordecaracteresespeciales() + " Caracteres especiales") ;
      }//GEN-LAST:event_btn_contadorActionPerformed
  
  
      // Variables declaration - do not modify//GEN-BEGIN:variables
      private javax.swing.JButton btn_contador;
      private javax.swing.JPanel jPanel1;
      private javax.swing.JScrollPane jScrollPane1;
      private javax.swing.JLabel lbl_letrero;
      private javax.swing.JLabel lbl_titulo;
      private javax.swing.JTextArea ta_parrafo;
      // End of variables declaration//GEN-END:variables
  
  }