Respuestas de la comunidad Computrachos.com

1. 

   27

   

   10-27-11

   Terminus respondió:

   try
   {
       /* Se crea una Mascara utilizando el simbolo # para los numeros. Ojo con el punto decimal, según el idioma puede ser una coma.*/
       MaskFormatter mascara = new MaskFormatter("##.##");
       // Se construye el JFormattedTextField y se le pasa la mascara
       JFormattedTextField textField = new JFormattedTextField(mascara);
       // Se da un valor inicial válido para evitar problemas
       textField.setValue(new Float("00.00"));
   }
   catch (...)
   

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   -5

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2. 

   98

   

   10-27-11

   Randy respondió:

   Probando_Validar_JFormatedTextField.java

   
   package data.amayasystems.com;
   
   import java.awt.Dimension;
   import java.awt.Toolkit;
   import javax.swing.JOptionPane;
   
   /**
    *
    * @author Ing. Randy F. Amaya Guillen
    * UTH - Campus La Ceiba
    * Movil: +504 9565 4366
    * Email: randyamaya@amayasystems.com
    *
    * COMPUTRACHOS.COM
    * La Comunidad Donde el Conocimiento se Comparte.
    * http://computrachos.com
    *
    */
   
   public class Probando_Validar_JFormatedTextField extends javax.swing.JFrame {
   
       public Probando_Validar_JFormatedTextField() {
           initComponents();
           Validar_Numeros_Double validar = new Validar_Numeros_Double();
           validar.Validar_Numeros(importe,11);
           Dimension pantalla=Toolkit.getDefaultToolkit().getScreenSize();
           this.setLocation((pantalla.width-this.getPreferredSize().width)/2,(pantalla.height-this.getPreferredSize().height)/2);
       }
   
       @SuppressWarnings("unchecked")
       // <editor-fold defaultstate="collapsed" desc="Generated Code">
       private void initComponents() {
   
           titulo = new javax.swing.JLabel();
           jLabel1 = new javax.swing.JLabel();
           importe = new javax.swing.JFormattedTextField();
           salir = new javax.swing.JButton();
           jButton1 = new javax.swing.JButton();
   
           setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
   
           titulo.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
           titulo.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
           titulo.setText("Probando Validar JFormatedTextField");
           titulo.setName("titulo"); // NOI18N
   
           jLabel1.setText("Importe:");
           jLabel1.setName("jLabel1"); // NOI18N
   
           importe.setFormatterFactory(new javax.swing.text.DefaultFormatterFactory(new javax.swing.text.NumberFormatter(new java.text.DecimalFormat("#0.00"))));
           importe.setName("importe"); // NOI18N
           importe.addKeyListener(new java.awt.event.KeyAdapter() {
               public void keyTyped(java.awt.event.KeyEvent evt) {
                   importeKeyTyped(evt);
               }
           });
   
           salir.setText("Cerrar");
           salir.setName("salir"); // NOI18N
           salir.addActionListener(new java.awt.event.ActionListener() {
               public void actionPerformed(java.awt.event.ActionEvent evt) {
                   salirActionPerformed(evt);
               }
           });
   
           jButton1.setText("Obtener");
           jButton1.setName("jButton1"); // NOI18N
           jButton1.addActionListener(new java.awt.event.ActionListener() {
               public void actionPerformed(java.awt.event.ActionEvent evt) {
                   jButton1ActionPerformed(evt);
               }
           });
   
           javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
           getContentPane().setLayout(layout);
           layout.setHorizontalGroup(
               layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
               .addGroup(layout.createSequentialGroup()
                   .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                       .addGroup(layout.createSequentialGroup()
                           .addContainerGap()
                           .addComponent(titulo, javax.swing.GroupLayout.DEFAULT_SIZE, 384, Short.MAX_VALUE))
                       .addGroup(layout.createSequentialGroup()
                           .addGap(20, 20, 20)
                           .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                               .addGroup(layout.createSequentialGroup()
                                   .addComponent(jButton1)
                                   .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                   .addComponent(salir))
                               .addGroup(layout.createSequentialGroup()
                                   .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 117, javax.swing.GroupLayout.PREFERRED_SIZE)
                                   .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                   .addComponent(importe, javax.swing.GroupLayout.PREFERRED_SIZE, 253, javax.swing.GroupLayout.PREFERRED_SIZE)))))
                   .addContainerGap())
           );
           layout.setVerticalGroup(
               layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
               .addGroup(layout.createSequentialGroup()
                   .addContainerGap()
                   .addComponent(titulo, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
                   .addGap(18, 18, 18)
                   .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                       .addComponent(importe, javax.swing.GroupLayout.DEFAULT_SIZE, 37, Short.MAX_VALUE)
                       .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE))
                   .addGap(18, 18, 18)
                   .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                       .addComponent(salir)
                       .addComponent(jButton1))
                   .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
           );
   
           pack();
       }// </editor-fold>
   
       private void salirActionPerformed(java.awt.event.ActionEvent evt) {
           System.exit(0);
       }
   
       private void importeKeyTyped(java.awt.event.KeyEvent evt) {
   
       }
   
       private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
           JOptionPane.showMessageDialog(null,importe.getText());
       }
   
       public static void main(String args[])
       {
           java.awt.EventQueue.invokeLater(new Runnable()
           {
               public void run()
               {
                   new Probando_Validar_JFormatedTextField().setVisible(true);
               }
           });
       }
       // Variables declaration - do not modify
       private javax.swing.JFormattedTextField importe;
       private javax.swing.JButton jButton1;
       private javax.swing.JLabel jLabel1;
       private javax.swing.JButton salir;
       private javax.swing.JLabel titulo;
       // End of variables declaration
   }
   

   Validar_Numeros_Double.java

   
   package data.amayasystems.com;
   
   import java.awt.event.KeyAdapter;
   import java.awt.event.KeyEvent;
   import javax.swing.JFormattedTextField;
   
   public class Validar_Numeros_Double
   {
       public Validar_Numeros_Double()
       {
       }
   
       public void Validar_Numeros(Object objeto, final int tamano)
       {
           final JFormattedTextField temp1=(JFormattedTextField) objeto;
           temp1.addKeyListener(new java.awt.event.KeyAdapter()
           {
               public void keyTyped(java.awt.event.KeyEvent e)
               {
                   if(Character.isDigit(e.getKeyChar())||e.getKeyChar()=='.'||e.getKeyChar()==e.VK_ENTER)
                   {
                       if(temp1.getText().length()>=tamano)
                       {
                           e.consume();
                       }
                   }
                   else
                   {
                       e.consume();
                   }
               }
           });
       }
   }
   

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