— Scott McNealy, Sun Microsystems Chairman, President and ceo

MidiEvent event = null;
try {
ShortMessage a = new ShortMessage();
a.setMessage(comd, chan, one, two);
event = new MidiEvent(a, tick);
} catch(Exception e) {e.printStackTrace(); }
return event;
}
} // close class
The other inner class 
listeners for the buttons
Make the NOTE ON and 
NOT OFF events, and 
add them to the Track.
This is the utility method from last 
chapter’s CodeKitchen. Nothing new.
This makes events for one instrument at a time, for 
all 16 beats. So it might get an int[ ] for the Bass 
drum, and each index in the array will hold either 
the key of that instrument, or a zero. If it’s a zero, 
the instrument isn’t supposed to play at that beat. 
Otherwise, make an event and add it to the track.
The Tempo Factor scales 
the sequencer’s tempo by 
the factor provided. The 
default is 1.0, so we’re 
adjusting +/- 3% per 
click.

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424
 
chapter 13
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3
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Exercise
Which code goes with 
which layout?
Five of the six screens below were made from one 
of the code fragments on the opposite page. Match 
each of the five code fragments with the layout that 
fragment would produce.
exercise: 
Which Layout?

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using 
swing
you are here
4
425
JFrame frame = new JFrame();
JPanel panel = new JPanel();
panel.setBackground(Color.darkGray); 
JButton button = new JButton(“tesuji”);