// Piccolissimo Lettore Audio per Java
1
2 package Multimedia;
3
4 import javax.swing.JDialog;
5 import javax.swing.JFrame;
6 import javax.swing.UIManager;
7 import javax.swing.UnsupportedLookAndFeelException;
8 import javax.swing.plaf.metal.MetalLookAndFeel;
9
10 public class AudioSystem
11 {
12 public static void main(String[] args)
13 {
14 JFrame.setDefaultLookAndFeelDecorated(true);
15 JDialog.setDefaultLookAndFeelDecorated(true);
16
17 try
18 {
19 UIManager.setLookAndFeel(new MetalLookAndFeel());
20 }
21 catch(UnsupportedLookAndFeelException e)
22 {
23 e.printStackTrace();
24 }
25
26 new AudioGUI();
27 }
28 }
1
2 package Multimedia;
3
4 import java.awt.Container;
5 import java.awt.event.ActionEvent;
6 import java.awt.event.ActionListener;
7 import java.awt.event.WindowEvent;
8 import java.awt.event.WindowListener;
9 import java.io.File;
10
11 import javax.swing.JButton;
12 import javax.swing.JFileChooser;
13 import javax.swing.JFrame;
14 import javax.swing.JPanel;
15
16 public class AudioGUI extends JFrame implements WindowListener
17 {
18 public AudioGUI()
19 {
20 this.setTitle("AudioSystem");
21 this.setSize(240, 100);
22 this.setResizable(false);
23
24 this.addWindowListener(this);
25
26 Container gc = this.getContentPane();
27 gc.add(new AudioGUIPan());
28
29 this.setVisible(true);
30 }
31
32 public void windowOpened(WindowEvent e)
33 {
34
35 }
36
37 public void windowClosing(WindowEvent e)
38 {
39 System.exit(0);
40 }
41
42 public void windowClosed(WindowEvent e)
43 {
44
45 }
46
47 public void windowIconified(WindowEvent e)
48 {
49
50 }
51
52 public void windowDeiconified(WindowEvent e)
53 {
54
55 }
56
57 public void windowActivated(WindowEvent e)
58 {
59
60 }
61
62 public void windowDeactivated(WindowEvent e)
63 {
64
65 }
66 }
67
68 class AudioGUIPan extends JPanel implements ActionListener
69 {
70 private JButton play;
71 private JButton stop;
72 private JButton loop;
73 private JButton open;
74 private JButton close;
75
76 private JFileChooser jfc;
77
78 private String file;
79
80 private AudioDevice ad;
81
82 public AudioGUIPan()
83 {
84 play = new JButton("Play");
85 play.addActionListener(this);
86 stop = new JButton("Stop");
87 stop.addActionListener(this);
88 open = new JButton("Open");
89 open.addActionListener(this);
90 close = new JButton("Close");
91 close.addActionListener(this);
92
93 this.add(stop);
94 this.add(play);
95 this.add(open);
96 this.add(close);
97 }
98
99 public void actionPerformed(ActionEvent e)
100 {
101 if(e.getSource() == close)
102 {
103 System.exit(0);
104 }
105 else if(e.getSource() == open)
106 {
107 jfc = new JFileChooser();
108 jfc.setFileFilter(new AudioFilter());
109
110 if(jfc.showOpenDialog(this) != JFileChooser.CANCEL_OPTION)
111 {
112 file = jfc.getSelectedFile().getAbsolutePath();
113 ad = new AudioDevice(new File(file));
114 }
115 }
116 else if(e.getSource() == play)
117 {
118 if(ad != null)
119 ad.play();
120 }
121 else if(e.getSource() == stop)
122 {
123 if(ad != null)
124 ad.stop();
125 }
126 }
127 }
1
2 package Multimedia;
3 import java.io.File;
4
5 import javax.swing.filechooser.FileFilter;
6
7 public class AudioFilter extends FileFilter
8 {
9 public boolean accept(File f)
10 {
11 return f.getName().toLowerCase().endsWith(".wav") || f.isDirectory();
12 }
13
14 public String getDescription()
15 {
16 return "Audio File *.wav";
17 }
18 }
1
2 package Multimedia;
3
4 import java.applet.Applet;
5 import java.applet.AudioClip;
6 import java.io.File;
7 import java.net.MalformedURLException;
8
9 public class AudioDevice implements AudioClip
10 {
11 private AudioClip ac;
12 public AudioDevice(File f)
13 {
14 try
15 {
16 ac = Applet.newAudioClip(f.toURL());
17 }
18 catch(MalformedURLException e)
19 {
20 e.printStackTrace();
21 }
22 }
23
24 public void play()
25 {
26 ac.play();
27 }
28
29 public void stop()
30 {
31 ac.stop();
32 }
33
34 public void loop()
35 {
36
37 }
38 }
