<:> Notes applet code
import javax.swing.*;
import javax.sound.midi.*;
import java.awt.event.*;
import java.awt.*;
public class Notes extends JApplet implements MouseListener {
Sequencer sequencer;
int randomPitch() {
return((int)(Math.random() * 127));
}
public void init() {
addMouseListener(this);
try {
sequencer = MidiSystem.getSequencer();
sequencer.open();
Sequence sequence = new Sequence(Sequence.PPQ, 16);
sequencer.setTempoInBPM(120);
Track track = sequence.createTrack();
for (int tick = 0; tick < 1000; tick++) {
ShortMessage msg = new ShortMessage();
msg.setMessage(ShortMessage.NOTE_ON, 1, randomPitch(), 100);
track.add(new MidiEvent(msg, tick)); }
sequencer.setSequence(sequence);
sequencer.start();
} catch(Exception ex) { ex.printStackTrace(); }
}
public void mousePressed(MouseEvent event) {
if (sequencer.isRunning()) {
getContentPane().setBackground(Color.red);
sequencer.stop(); }
else {
getContentPane().setBackground(Color.green);
sequencer.start(); }
}
public void mouseReleased(MouseEvent event) { }
public void mouseClicked(MouseEvent event) { }
public void mouseEntered(MouseEvent event) { }
public void mouseExited(MouseEvent event) { }
}