This tutorial will teach you how to create a program that will load and play a MIDI sound file in java. We all know that MIDI or Musical Instrument Digital Interface) is a sound designed for recording and playing back music on digital synthesizers that is supported by many makes of personal computer sound cards. It has .mid extension file.

So, now let's start this tutorial!

1. Open JCreator or NetBeans and make a java program with a file name of playMIDI.java.

2. Import the following package library:

1. import
   
   java.io.*
   
   ;
   
   //used to access the File class
   
2. import
   
   javax.sound.midi.*
   
   ;
   
   //used to access MidiSystem, Sequence, and Sequencer class
   

3. Now, you have to put your MIDI file on the same folder with the your program. Then access the MIDI file with this code:

1. // From file
   
2. Sequence
   
   sequence =
   
   MidiSystem
   
   .getSequence
   
   (
   
   new
   
   File
   
   (
   
   "midifile.mid"
   
   )
   
   )
   
   ;
   

midifile.mid is the filename of the MIDI filie and you can change this to your MIDI file name.

4. Create a sequencer for the sequence of the MIDI file.

1. Sequencer
   
   sequencer =
   
   MidiSystem
   
   .getSequencer
   
   (
   
   )
   
   ;
   
2. sequencer.open
   
   (
   
   )
   
   ;
   
3. sequencer.setSequence
   
   (
   
   sequence)
   
   ;
   

5. To start playing your MIDI file, have this code below:

1. // Start playing
   
2. sequencer.start
   
   (
   
   )
   
   ;
   

Output:
When pressing the run button in your Java software, the MIDI filename will automatically play.


Here's the full code of this tutorial:

1. import
   
   java.io.File
   
   ;
   
2. 
   
3. import
   
   javax.sound.midi.MidiSystem
   
   ;
   
4. import
   
   javax.sound.midi.Sequence
   
   ;
   
5. import
   
   javax.sound.midi.Sequencer
   
   ;
   
6. 
   
7. public
   
   class
   
   playMIDI {
   
8. public
   
   static
   
   void
   
   main(
   
   String
   
   [
   
   ]
   
   argv)
   
   throws
   
   Exception
   
   {
   
9. // From file
   
10. Sequence
    
    sequence =
    
    MidiSystem
    
    .getSequence
    
    (
    
    new
    
    File
    
    (
    
    "midifile.mid"
    
    )
    
    )
    
    ;
    
11. 
    
12. // Create a sequencer for the sequence
    
13. Sequencer
    
    sequencer =
    
    MidiSystem
    
    .getSequencer
    
    (
    
    )
    
    ;
    
14. sequencer.open
    
    (
    
    )
    
    ;
    
15. sequencer.setSequence
    
    (
    
    sequence)
    
    ;
    
16. 
    
17. // Start playing
    
18. sequencer.start
    
    (
    
    )
    
    ;
    
19. }
    
20. }
    

For more inquiries and need programmer for your thesis systems in any kind of programming languages, just contact my number below.

Best Regards,

Engr. Lyndon Bermoy
IT Instructor/System Developer/Android Developer/Freelance Programmer
Mobile: 09488225971
Landline: 826-9296
E-mail:[email protected]

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