Reproductor de Audio en Java

Reproductor de Audio basico en Java con opciones de Play, Pausa y Stop.
Primero descargar e instalar Java Media Framework API (JMF) del siguiente enlace. http://www.oracle.com/technetwork/java/javase/download-142937.html

import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.media.CannotRealizeException;
import javax.media.Manager;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.media.Time;
import javax.swing.ImageIcon;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.swing.filechooser.FileNameExtensionFilter;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Delfi
 */
public class Reproductor extends javax.swing.JFrame {
   
    Player audioPlayer = null;
    String audioPath = " ";  
    /**
     * Creates new form Reproductor
     */
    public Reproductor() {
        initComponents();
        this.setLocationRelativeTo(null);
        jlabelEstado.setText(" ");
        dirArchivo.setText(" ");
    }  

    /**
     * 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")
    //                         
    private void initComponents() {

        jPanel2 = new javax.swing.JPanel();
        btnPlay = new javax.swing.JButton();
        btnPause = new javax.swing.JButton();
        btnStop = new javax.swing.JButton();
        jlabelEstado = new javax.swing.JLabel();
        dirArchivo = new javax.swing.JLabel();
        jMenuBar1 = new javax.swing.JMenuBar();
        jMenu1 = new javax.swing.JMenu();
        jMenuAbrir = new javax.swing.JMenuItem();
        jMenuSalir = new javax.swing.JMenuItem();
        jMenuAbout = new javax.swing.JMenu();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Reproductor de Audio - Java Tips - http://javacodebasics.blogspot.mx");
        setIconImage(new ImageIcon(getClass().getResource("/Imagenes/music.png")).getImage());
        setResizable(false);

        btnPlay.setIcon(new javax.swing.ImageIcon(getClass().getResource("/imagenes/play.png"))); // NOI18N
        btnPlay.setText("Play");
        btnPlay.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnPlayActionPerformed(evt);
            }
        });

        btnPause.setIcon(new javax.swing.ImageIcon(getClass().getResource("/imagenes/pause.png"))); // NOI18N
        btnPause.setText("Pause");
        btnPause.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnPauseActionPerformed(evt);
            }
        });

        btnStop.setIcon(new javax.swing.ImageIcon(getClass().getResource("/imagenes/stop.png"))); // NOI18N
        btnStop.setText("Stop");
        btnStop.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnStopActionPerformed(evt);
            }
        });

        jlabelEstado.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        jlabelEstado.setText("Reproductor");

        dirArchivo.setText(" ");

        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addComponent(btnPlay, javax.swing.GroupLayout.PREFERRED_SIZE, 165, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addComponent(btnPause, javax.swing.GroupLayout.PREFERRED_SIZE, 165, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addComponent(btnStop, javax.swing.GroupLayout.PREFERRED_SIZE, 165, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(0, 0, Short.MAX_VALUE))
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel2Layout.createSequentialGroup()
                        .addComponent(jlabelEstado, javax.swing.GroupLayout.PREFERRED_SIZE, 223, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(0, 0, Short.MAX_VALUE))
                    .addComponent(dirArchivo, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                .addContainerGap())
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
                .addContainerGap(14, Short.MAX_VALUE)
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(btnPlay)
                    .addComponent(btnPause)
                    .addComponent(btnStop))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jlabelEstado)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(dirArchivo)
                .addGap(3, 3, 3))
        );

        jMenu1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/imagenes/archivo.png"))); // NOI18N
        jMenu1.setText("Archivo");

        jMenuAbrir.setIcon(new javax.swing.ImageIcon(getClass().getResource("/imagenes/abrir.png"))); // NOI18N
        jMenuAbrir.setText("Abrir archivo de audio");
        jMenuAbrir.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuAbrirActionPerformed(evt);
            }
        });
        jMenu1.add(jMenuAbrir);

        jMenuSalir.setIcon(new javax.swing.ImageIcon(getClass().getResource("/imagenes/salir.png"))); // NOI18N
        jMenuSalir.setText("Salir");
        jMenuSalir.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuSalirActionPerformed(evt);
            }
        });
        jMenu1.add(jMenuSalir);

        jMenuBar1.add(jMenu1);

        jMenuAbout.setIcon(new javax.swing.ImageIcon(getClass().getResource("/imagenes/about.png"))); // NOI18N
        jMenuAbout.setText("About");
        jMenuAbout.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jMenuAboutMouseClicked(evt);
            }
        });
        jMenuBar1.add(jMenuAbout);

        setJMenuBar(jMenuBar1);

        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()
                .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(0, 0, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );

        pack();
    }//                       

    private void btnPauseActionPerformed(java.awt.event.ActionEvent evt) {                                        
        audioPlayer.stop();
        jlabelEstado.setText("Pausa");
    }                                      

    private void btnPlayActionPerformed(java.awt.event.ActionEvent evt) {                                      
        if(file.equals(""))
        {
            JOptionPane.showMessageDialog(null, "Cargue una Pista de Audio", "Error al Reproducir", JOptionPane.INFORMATION_MESSAGE, new ImageIcon(getClass().getResource("/imagenes/verificar.png")));
        }
        else
        {
            audioPlayer.start();
            jlabelEstado.setText("Reproduciendo");
        }
    }                                      

    private void btnStopActionPerformed(java.awt.event.ActionEvent evt) {                                      
        audioPlayer.stop();
        audioPlayer.setMediaTime(new Time(0.0));
        jlabelEstado.setText("");
    }                                      

    String file="";
    public String abrirAudio()
    {    
        JFileChooser se = new JFileChooser();
       
        se.setCurrentDirectory(new File(System.getProperty("user.home") + "\\Music"));
        FileNameExtensionFilter filtro = new FileNameExtensionFilter("Archivos de Imagen", "mp3", "wav");
        se.setFileFilter(filtro);
        se.setFileSelectionMode(JFileChooser.FILES_ONLY);
       
        int estado = se.showOpenDialog(null);
        if(estado == JFileChooser.APPROVE_OPTION)
        {
            try
            {
                String pathArchivo = se.getSelectedFile().getPath();
                URL url = se.getSelectedFile().toURL();  
                this.file= se.getSelectedFile().getName();
                audioPlayer = Manager.createRealizedPlayer( url );
                dirArchivo.setText(pathArchivo);
            } catch (MalformedURLException ex) {
                Logger.getLogger(Reproductor.class.getName()).log(Level.SEVERE, null, ex);
            } catch (IOException ex) {
                Logger.getLogger(Reproductor.class.getName()).log(Level.SEVERE, null, ex);
            } catch (NoPlayerException ex) {
                Logger.getLogger(Reproductor.class.getName()).log(Level.SEVERE, null, ex);
            } catch (CannotRealizeException ex) {
                Logger.getLogger(Reproductor.class.getName()).log(Level.SEVERE, null, ex);
            }
        }        
        return "Java Tips - " + this.file;
    }
   
    private void jMenuAbrirActionPerformed(java.awt.event.ActionEvent evt) {                                          
      this.setTitle(abrirAudio());
    }                                        

    private void jMenuSalirActionPerformed(java.awt.event.ActionEvent evt) {                                          
        this.dispose();
    }                                        

    private void jMenuAboutMouseClicked(java.awt.event.MouseEvent evt) {                                      
        About a = new About();
        a.setVisible(true);
    }                                      

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //
        /* 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(Reproductor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Reproductor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Reproductor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Reproductor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Reproductor().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify                    
    private javax.swing.JButton btnPause;
    private javax.swing.JButton btnPlay;
    private javax.swing.JButton btnStop;
    private javax.swing.JLabel dirArchivo;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenu jMenuAbout;
    private javax.swing.JMenuItem jMenuAbrir;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JMenuItem jMenuSalir;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JLabel jlabelEstado;
    // End of variables declaration                  
}

Descargar Archivo Netbeans:

Customize JOptionPane Dialog

import javax.swing.*;

public class Test
{
    public static void main(String[] args)
    {
        final ImageIcon icon = new ImageIcon("C:\\Users\\Delfi\\Desktop\\ejemplo.jpg");
        JOptionPane.showMessageDialog(null, "Blah blah blah", "About", JOptionPane.INFORMATION_MESSAGE, icon);
    }
}

or

String mensaje = "Java Tips"

JOptionPane.showMessageDialog(null, mensaje, "http://javacodebasics.blogspot.com/", 
JOptionPane.INFORMATION_MESSAGE, new ImageIcon(getClass().getResource("/Imagenes/dataOk.png")));

Add & remove ImageIcon to JLabel

Java adding ImageIcon to JLabel

ImageIcon image;
image = new ImageIcon(C:/Users/Delfi/Desktop/data4.png);
jlabel1.setIcon(image);

How to use getClass().getResource() method

ImageIcon image;
image = new ImageIcon(getClass().getResource("/Imagenes/data4.png"));
jlabel1.setIcon(image);

Remove an icon on a JLabel

jlabel1.setIcon(null) 
in the event handler that handles the button click, if you're using Swing.

Labels alineadas y formateadas HTML + CSS

En ocasiones, es más útil mostrar todos los campos del formulario con su <label> alineada a la izquierda y el campo del formulario a la derecha de cada <label>, como muestra la siguiente imagen:

Mostrando las etiquetas label alineadas con los campos del formulario

Para mostrar un formulario tal y como aparece en la imagen anterior no es necesario crear una tabla y controlar la anchura de sus columnas para conseguir una alineación perfecta. Sin embargo, sí que es necesario añadir un nuevo elemento (por ejemplo un <div>) que encierre a cada uno de los campos del formulario (<label> y <input>).

El código HTML del formulario anterior se añaden los elementos <div>:

<form>
  <fieldset>
  <legend>Alta en el servicio</legend>

  <div>
    <label for="nombre">Nombre</label>
    <input type="text" id="nombre" />
  </div>

  <div>
    <label for="apellidos">Apellidos</label>
    <input type="text" id="apellidos" size="35" />
  </div>
  ...
</fieldset>
</form>

Y en el código CSS se añaden las reglas necesarias para alinear los campos del formulario:

div {
  margin: .4em 0;
}
div label {
  width: 25%;
  float: left;
}

get the text of the selected option in PHP - MySQL

Example

<select name="pais">
<option value="USA">USA</option>
<option value="Canada">Canada</option>
</select>

< ?
$pais = strip_tags($_POST['pais']);
? >

Reset MySQL Autoincrement Column

Directly Reset Autoincrement Value
Alter table syntax provides a way to reset autoincrement column. Take a look at following example.

ALTER TABLE `table_name` AUTO_INCREMENT=1

Example

ALTER TABLE `id_estudiantes` AUTO_INCREMENT=1