MP3 Player - zDubsCrazy

package mp3player;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JSlider;
import javax.swing.UIManager;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.filechooser.FileNameExtensionFilter;

import javafx.embed.swing.JFXPanel;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;

public class MP3Player {

    private static MediaPlayer player;
    private static JLabel volumeIndicator = new JLabel("50");

    public static void main(final String[] args) {
        try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (Exception e) {}
        final JFrame frame = new JFrame("MP3 Player");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 275);
        frame.setLocationRelativeTo(null);
        frame.setResizable(false);
        frame.setLayout(null);

        JFXPanel panel = new JFXPanel();
        panel.setLayout(null);
        frame.setContentPane(panel);

        final JFileChooser chooser = new JFileChooser();
        chooser.setFileFilter(new FileNameExtensionFilter("Arquivos de música", "mp3", "wav"));

        final JButton btnSelect = new JButton("Selecionar arquivo");
        btnSelect.setBounds(25, 25, 150, 50);
        btnSelect.setFocusable(false);

        final JButton btnPause = new JButton("Pausar");
        btnPause.setEnabled(false);
        btnPause.setBounds(200, 25, 150, 50);
        btnPause.setFocusable(false);

        final JButton btnPlay = new JButton("Tocar");
        btnPlay.setEnabled(false);
        btnPlay.setBounds(25, 100, 150, 50);
        btnPlay.setFocusable(false);

        final JButton btnStop = new JButton("Parar");
        btnStop.setEnabled(false);
        btnStop.setBounds(200, 100, 150, 50);
        btnStop.setFocusable(false);

        final JSlider volume = new JSlider(0, 100, 50);
        volume.setEnabled(false);
        volume.setBounds(125, 175, 150, 50);
        volume.setFocusable(false);

        volume.addChangeListener(new VolumeAdapter());

        volumeIndicator.setBounds(195, 220, 30, 20);

        btnSelect.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                chooser.showOpenDialog(frame);
                final File f = chooser.getSelectedFile();
                if (f == null) {
                    JOptionPane.showMessageDialog(null, "Arquivo inválido!", "MP3 Player",
                            JOptionPane.ERROR_MESSAGE);
                    return;
                }
                Media media = new Media(f.toURI().toString());
                player = new MediaPlayer(media);
                player.setVolume(0.5);
                player.play();
                player.setAutoPlay(true);
                btnSelect.setEnabled(false);
                btnPause.setEnabled(true);
                btnStop.setEnabled(true);
                volume.setEnabled(true);
            }
        });

        btnPause.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                player.pause();
                btnPause.setEnabled(false);
                btnStop.setEnabled(false);
                btnPlay.setEnabled(true);
            }
        });

        btnPlay.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                player.play();
                btnPlay.setEnabled(false);
                btnStop.setEnabled(true);
                btnPause.setEnabled(true);
            }
        });

        btnStop.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                player.stop();
                volumeIndicator.setText("50");
                volume.setValue(50);
                btnPlay.setEnabled(false);
                btnPause.setEnabled(false);
                btnStop.setEnabled(false);
                volume.setEnabled(false);
                btnSelect.setEnabled(true);
            }
        });

        panel.add(btnSelect);
        panel.add(btnPause);
        panel.add(btnPlay);
        panel.add(btnStop);
        panel.add(volume);
        panel.add(volumeIndicator);
        frame.setVisible(true);
    }

    private static class VolumeAdapter implements ChangeListener {

        @Override
        public void stateChanged(ChangeEvent e) {
            JSlider slider = (JSlider) e.getSource();
            if (!(slider.getValueIsAdjusting())) {
                double volume = (double) slider.getValue() / 100;
                player.setVolume(volume);
                volumeIndicator.setText("" + slider.getValue());
            }
        }
    }

}