import javafx.scene.media.*;                                                    
import javafx.embed.swing.*;                                                    
import java.net.*;                                                              
import java.io.*;                                                               
import java.util.*;
                                                                                
class Mp3Player {                                                               
  public static void main(String []args)  throws Exception {
    final JFXPanel fxPanel = new JFXPanel();    
    ArrayList<File> listFiles = listMp3( args[0] ); 
    Iterator<File> itF = listFiles.iterator();
    ArrayList<MediaPlayer> mpl = new ArrayList<>();
    while( itF.hasNext() ) {
      File f = itF.next();
      mpl.add ( createMediaPlayer(f.toString()) );
    }
    
    while( mpl.size() > 0 ) {
      MediaPlayer player = mpl.remove(0);
      player.play();
      Thread.sleep(10000);
      player.stop();
    }
  } 

  static ArrayList<File> listMp3(String directory ) {
    File dir = new File(directory);
    ArrayList<File> files = new ArrayList<File>(Arrays.asList(dir.listFiles()));
    Iterator<File> it = files.iterator();
    while( it.hasNext()) {
      File f = it.next();
      if( !f.getName().substring(f.getName().length()-4).equals(".mp3") ) {
        System.out.println("-"+f.getName());
        it.remove();
      }
      else {
        System.out.println("+"+f.getName());
      }
    }
    return files;
  }  

  static MediaPlayer createMediaPlayer(String filename) {
    try {
      Media media = new Media( (new File(filename)).toURI().toURL().toString() );   
      MediaPlayer mediaPlayer = new MediaPlayer(media); 
      return mediaPlayer;
    } catch (Exception ex) {                                                       
      ex.printStackTrace();                                                        
    } 
    return null;
  }  
}