Java - Mini Lettore Wav

package Multimedia;
 
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.plaf.metal.MetalLookAndFeel;
 
public class AudioSystem
{
	public static void main(String[] args)
	{
		JFrame.setDefaultLookAndFeelDecorated(true);
		JDialog.setDefaultLookAndFeelDecorated(true);
 
		try
		{
			UIManager.setLookAndFeel(new MetalLookAndFeel());
		}
		catch(UnsupportedLookAndFeelException e)
		{
			e.printStackTrace();
		}
 
		new AudioGUI();
	}
}
 
 
package Multimedia;
 
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.io.File;
 
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
 
public class AudioGUI extends JFrame implements WindowListener
{
	public AudioGUI()
	{
		this.setTitle("AudioSystem");
		this.setSize(240, 100);
		this.setResizable(false);
 
		this.addWindowListener(this);
 
		Container gc = this.getContentPane();
		gc.add(new AudioGUIPan());
 
		this.setVisible(true);
	}
 
	public void windowOpened(WindowEvent e)
	{
 
	}
 
	public void windowClosing(WindowEvent e)
	{
		System.exit(0);
	}
 
	public void windowClosed(WindowEvent e)
	{
 
	}
 
	public void windowIconified(WindowEvent e)
	{
 
	}
 
	public void windowDeiconified(WindowEvent e)
	{
 
	}
 
	public void windowActivated(WindowEvent e)
	{
 
	}
 
	public void windowDeactivated(WindowEvent e)
	{
 
	}
}
 
class AudioGUIPan extends JPanel implements ActionListener
{
	private JButton play;
	private JButton stop;
	private JButton loop;
	private JButton open;
	private JButton close;
 
	private JFileChooser jfc;
 
	private String file;
 
	private AudioDevice ad;
 
	public AudioGUIPan()
	{
		play = new JButton("Play");
		play.addActionListener(this);
		stop = new JButton("Stop");
		stop.addActionListener(this);
		open = new JButton("Open");
		open.addActionListener(this);
		close = new JButton("Close");
		close.addActionListener(this);
 
		this.add(stop);
		this.add(play);
		this.add(open);
		this.add(close);
	}
 
	public void actionPerformed(ActionEvent e)
	{
		if(e.getSource() == close)
		{
			System.exit(0);
		}
		else if(e.getSource() == open)
		{
			jfc = new JFileChooser();
			jfc.setFileFilter(new AudioFilter());
 
			if(jfc.showOpenDialog(this) != JFileChooser.CANCEL_OPTION)
			{
				file = jfc.getSelectedFile().getAbsolutePath();
				ad = new AudioDevice(new File(file));
			}
		}
		else if(e.getSource() == play)
		{
			if(ad != null)
				ad.play();
		}
		else if(e.getSource() == stop)
		{
			if(ad != null)
				ad.stop();
		}
	}
}
 
 
package Multimedia;
import java.io.File;
 
import javax.swing.filechooser.FileFilter;
 
public class AudioFilter extends FileFilter
{
	public boolean accept(File f)
	{
		return f.getName().toLowerCase().endsWith(".wav") || f.isDirectory();
	}
 
	public String getDescription()
	{
		return "Audio File *.wav";
	}
}
 
 
package Multimedia;
 
import java.applet.Applet;
import java.applet.AudioClip;
import java.io.File;
import java.net.MalformedURLException;
 
public class AudioDevice implements AudioClip
{
	private AudioClip ac;
	public AudioDevice(File f)
	{		
		try
		{
			ac = Applet.newAudioClip(f.toURL());
		}
		catch(MalformedURLException e)
		{
			e.printStackTrace();
		}
	}
 
	public void play()
	{
		ac.play();
	}
 
	public void stop()
	{
		ac.stop();
	}
 
	public void loop()
	{
 
	}
}