Programación General > Java
lista enlazada en Java
(1/1)
luisjoseblancom:
hola buenas, necesito ayuda con un programa. Soy nuevo programando en Java y me mandaron a hacer un programa de listas y me falta una parte que es mostrar, mi duda es como hago para usar un boton para mostrar los datos guardados en un textarea. Como hago para enlazarlos de alguna manera.
--- Código: Java(TM) 2 Platform Standard Edition 5.0 ---/* * To change this template, choose Tools | Templates * and open the template in the editor. */package lista_clase; /** * * @author cultca */public class Pantalla extends javax.swing.JFrame { Alumno ptr,ptr1,inicio,ultimo,aux,c; public Pantalla() { 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 the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() { Nombre = new javax.swing.JLabel(); APELLIDO = new javax.swing.JLabel(); Cedula = new javax.swing.JLabel(); edad = new javax.swing.JLabel(); nombre = new javax.swing.JTextField(); apellido = new javax.swing.JTextField(); CEDULA = new javax.swing.JTextField(); EDAD = new javax.swing.JTextField(); jLabel5 = new javax.swing.JLabel(); BOTONINGRESAR = new javax.swing.JButton(); BOTONMOSTRAR = new javax.swing.JButton(); jScrollPane1 = new javax.swing.JScrollPane(); jList1 = new javax.swing.JList(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); setAlwaysOnTop(true); setBackground(new java.awt.Color(0, 0, 0)); setCursor(new java.awt.Cursor(java.awt.Cursor.HAND_CURSOR)); setForeground(java.awt.Color.green); setName("Pantalla"); // NOI18N Nombre.setBackground(new java.awt.Color(153, 153, 153)); Nombre.setFont(new java.awt.Font("Tunga", 0, 14)); // NOI18N Nombre.setForeground(new java.awt.Color(51, 51, 255)); Nombre.setText("NOMBRE:"); APELLIDO.setBackground(new java.awt.Color(153, 153, 153)); APELLIDO.setFont(new java.awt.Font("Tunga", 0, 14)); // NOI18N APELLIDO.setForeground(new java.awt.Color(0, 0, 255)); APELLIDO.setText("APELLIDO:"); Cedula.setBackground(new java.awt.Color(153, 153, 153)); Cedula.setFont(new java.awt.Font("Tunga", 0, 14)); // NOI18N Cedula.setForeground(new java.awt.Color(0, 0, 255)); Cedula.setText("CEDULA:"); edad.setBackground(new java.awt.Color(153, 153, 153)); edad.setFont(new java.awt.Font("Tunga", 0, 14)); // NOI18N edad.setForeground(new java.awt.Color(0, 0, 255)); edad.setText("EDAD:"); nombre.setFont(new java.awt.Font("Traditional Arabic", 3, 14)); // NOI18N apellido.setFont(new java.awt.Font("Traditional Arabic", 3, 14)); // NOI18N CEDULA.setFont(new java.awt.Font("Traditional Arabic", 3, 14)); // NOI18N CEDULA.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { CEDULAActionPerformed(evt); } }); EDAD.setFont(new java.awt.Font("Traditional Arabic", 3, 14)); // NOI18N EDAD.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { EDADActionPerformed(evt); } }); jLabel5.setFont(new java.awt.Font("Times New Roman", 0, 20)); // NOI18N jLabel5.setText("Lista De Clases "); BOTONINGRESAR.setBackground(new java.awt.Color(102, 102, 102)); BOTONINGRESAR.setForeground(new java.awt.Color(0, 0, 255)); BOTONINGRESAR.setText("INGRESAR"); BOTONINGRESAR.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { BOTONINGRESARActionPerformed(evt); } }); BOTONMOSTRAR.setBackground(new java.awt.Color(102, 102, 102)); BOTONMOSTRAR.setForeground(new java.awt.Color(51, 51, 255)); BOTONMOSTRAR.setText("MOSTRAR"); BOTONMOSTRAR.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { BOTONMOSTRARActionPerformed(evt); } }); jScrollPane1.setViewportView(jList1); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() .addGap(0, 0, Short.MAX_VALUE) .addComponent(BOTONMOSTRAR) .addGap(120, 120, 120)) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(BOTONINGRESAR) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(Nombre, javax.swing.GroupLayout.PREFERRED_SIZE, 56, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(APELLIDO) .addComponent(Cedula) .addComponent(edad)) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(nombre, javax.swing.GroupLayout.PREFERRED_SIZE, 210, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGroup(layout.createSequentialGroup() .addGap(14, 14, 14) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(CEDULA, javax.swing.GroupLayout.PREFERRED_SIZE, 140, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(apellido, javax.swing.GroupLayout.PREFERRED_SIZE, 210, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(EDAD, javax.swing.GroupLayout.PREFERRED_SIZE, 49, javax.swing.GroupLayout.PREFERRED_SIZE)))))) .addGap(18, 18, 18) .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 177, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGroup(layout.createSequentialGroup() .addGap(118, 118, 118) .addComponent(jLabel5))) .addContainerGap(70, Short.MAX_VALUE)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(9, 9, 9) .addComponent(jLabel5, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(18, 18, 18) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 262, Short.MAX_VALUE) .addGap(18, 18, 18) .addComponent(BOTONMOSTRAR)) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(nombre, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(Nombre, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(6, 6, 6) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(apellido, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(APELLIDO, javax.swing.GroupLayout.PREFERRED_SIZE, 20, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(CEDULA, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(Cedula)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(EDAD, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(edad)) .addGap(18, 18, 18) .addComponent(BOTONINGRESAR) .addGap(19, 19, 19)))) ); pack(); }// </editor-fold> private void EDADActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: } private void CEDULAActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: } private void BOTONINGRESARActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: if (ptr==null){ ptr=new Alumno(); // esto es para convertir los enteros en string ptr.set_cedula(Integer.parseInt(CEDULA.getText())); ptr.set_edad(Integer.parseInt(EDAD.getText())); // esto es para borrar los datos en la pantalla nombre.setText(" "); apellido.setText(" "); CEDULA.setText(" "); EDAD.setText(" "); ptr1=ptr; inicio=ptr; ultimo=ptr; ultimo.sig=null; } else { ptr=new Alumno(); ptr.set_nombre(nombre.getText()); ptr.set_apellido(apellido.getText()); //esto es para convertir los enteros en string ptr.set_cedula(Integer.parseInt(CEDULA.getText())); ptr.set_edad(Integer.parseInt(EDAD.getText())); // esto es para borrar los datos de la pantalla nombre.setText(" "); apellido.setText(" "); CEDULA.setText(" "); EDAD.setText(" "); ptr1.sig=ptr; ultimo=ptr; ultimo.sig=null; } } private void BOTONMOSTRARActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: aux=ptr; int c=0; while (aux!=null){ System.out.println("Nombre : "+aux.nombre); System.out.println("Apellido : "+aux.apellido); System.out.println("Cedula : "+aux.cedula); System.out.println("Edad : "+aux.edad); c++; } if (c==0){ System.out.println("LISTA VACIA"); } } /** * @param args the command line arguments */ public static void main(String args[]) { /* 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(Pantalla.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(Pantalla.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(Pantalla.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(Pantalla.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //</editor-fold> /* Create and display the form */ java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new Pantalla().setVisible(true); } }); } // Variables declaration - do not modify private javax.swing.JLabel APELLIDO; private javax.swing.JButton BOTONINGRESAR; private javax.swing.JButton BOTONMOSTRAR; private javax.swing.JTextField CEDULA; private javax.swing.JLabel Cedula; private javax.swing.JTextField EDAD; private javax.swing.JLabel Nombre; private javax.swing.JTextField apellido; private javax.swing.JLabel edad; private javax.swing.JLabel jLabel5; private javax.swing.JList jList1; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JTextField nombre; // End of variables declaration }
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