import javax.sound.midi.MidiChannel;
import javax.sound.midi.MidiSystem;
import javax.sound.midi.MidiUnavailableException;
import javax.sound.midi.Synthesizer;

public class TestMidi {
	public static void main(String... args) throws MidiUnavailableException, InterruptedException {
		Synthesizer synth = MidiSystem.getSynthesizer();
		synth.open();
		
		MidiChannel channel = synth.getChannels()[0];
		channel.noteOn(60, 127);
		channel.noteOn(64, 127);
		channel.noteOn(67, 127);
		
		Thread.sleep(2000);
		synth.close();
	}
}