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  MIDI: java.lang.IllegalArgumentException: Requested device not installed: null  (Read 1360 times)
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Offline nardev

Senior Newbie

« Posted 2005-11-22 13:14:32 »

Help please!?

public void playMidiFrom(String path) {
       try {
           Sequence midi = MidiSystem.getSequence(this.getClass().getClassLoader().getResource(path));
           Sequencer player = MidiSystem.getSequencer();
       } catch (IOException e) {
       } catch (InvalidMidiDataException e) {
          System.out.println("Invalid MIDI data");
       } catch (MidiUnavailableException e) {
          System.out.println("No midi");

i get this error:

java.lang.IllegalArgumentException: Requested device not installed: null
   at javax.sound.midi.MidiSystem.getGenericDevice(
   at javax.sound.midi.MidiSystem.getSequencer(
   at CroAsteroids1.lib.sounds.Sounds.playMidiFrom(
   at CroAsteroids1.lib.sounds.Sounds.<init>(
   at CroAsteroids1.lib.Asteroids.init(
   at CroAsteroids1.lib.Asteroids.main(

I can play mid's in Winamp. And i am not trying to play it in winamp at the same time while running the code. Using windows xp.

<a href="">CroAsteroids</a> - Shoot asteroids while doing math equations.
Offline oNyx

JGO Coder

Medals: 2

pixels! :x

« Reply #1 - Posted 2005-11-22 16:42:23 »

For midi playback you need a soundbank. The SDK/JDK comes with one... so if you use that jre it should work fine. With the default jre it doesnt really work out of the box.

You also might want to take a look at Martin Cameron's xm and mod players (see sound forum).

弾幕 ☆ @mahonnaiseblog
Offline nardev

Senior Newbie

« Reply #2 - Posted 2005-11-22 16:59:40 »

thanks for the tip...i'll look into that.

<a href="">CroAsteroids</a> - Shoot asteroids while doing math equations.
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Offline nardev

Senior Newbie

« Reply #3 - Posted 2005-11-23 10:28:17 »

i can't believe it can be this complicated to play a MID file using Java....

<a href="">CroAsteroids</a> - Shoot asteroids while doing math equations.
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