Java Sound @ Game causes laggs

I there. I'm developing a RTS (Real time strategy) and experienced some performance problems with the following code. Moving Images and Animations and so on got frame laggs everytime a sound is played...

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

import java.io.File;
import java.io.IOException;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;

class whoknows
{
   
   private Clip clip;
   
   public whoknows()
   {
   }
   
   public void loadPath(String pathi)
   {
      initPlayer(pathi);
   }
   
   private void initPlayer(String patho)
   {
      try 
      {
         AudioInputStream ais = AudioSystem.getAudioInputStream(new File(patho));
         AudioFormat format = ais.getFormat();
         DataLine.Info info = new DataLine.Info(Clip.class, format,((int) ais.getFrameLength() * format.getFrameSize()));
         clip = (Clip) AudioSystem.getLine(info);
         clip.open(ais);

         FloatControl gainControl = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN);
         gainControl.setValue(1.0F);
      }
      catch (Exception e) 
      {
         e.printStackTrace();
      }
   }
   
   public void play()
   {
      clip.start();
   }
   
}

well its adapted for this post, but thats basically it... is there a better methode playing sounds ? I already advanced to this method from using AudioClips : DD

and... if I play a background music file with the following code, I got generell laggs all the time and the animation and movements are not constant anymore....

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71

import java.io.*; 
import javax.sound.sampled.*; 

class Music 
{ 
  public Music()
  {
     }

 public void play() 
 { 

  File f = new File("music/vortex.au");  // yes, a sun .au file : D

  AudioInputStream ais; 

  AudioFormat format; 

  Clip cl; 

  try 
  { 
   ais = AudioSystem.getAudioInputStream(f); 
   format = ais.getFormat(); 

   if ((format.getEncoding() == AudioFormat.Encoding.ULAW) || 
       (format.getEncoding() == AudioFormat.Encoding.ALAW)) 
   { 
       AudioFormat tmp = new AudioFormat( 
                                 AudioFormat.Encoding.PCM_SIGNED, 
                                 format.getSampleRate(), 
                                 format.getSampleSizeInBits() * 2, 
                                 format.getChannels(), 
                                 format.getFrameSize() * 2, 
                                 format.getFrameRate(), 
                                 true); 
       ais = AudioSystem.getAudioInputStream(tmp, ais); 
       format = tmp; 
   } 
   DataLine.Info info = new DataLine.Info( 
                             Clip.class, 
                             ais.getFormat(), 
                             ((int) ais.getFrameLength() * 
                                 format.getFrameSize())); 


   System.out.println(info.toString()); 
   cl = (Clip) AudioSystem.getLine(info); 
   cl.open(ais); 
   cl.start();


  } 
  catch (IOException e) 
  { 
   System.out.println("error at reading the file"); 
  } 
  catch (UnsupportedAudioFileException e) 
  { 
   System.out.println("File typ not supported!"); 
  } 
  catch (LineUnavailableException e) 
  { 
   System.out.println("line not available!"); 
  } 
  /*catch (InterruptedException e) 
  { 
   System.out.println("cancel!"); 
  }*/
 } 
}

It seems these codes are working but are not designed for games like this because of the problems...

help : D