— Scott McNealy, Sun Microsystems Chairman, President and ceo

ObjectInputStream is = new ObjectInputStream(fileIn);
checkboxState = (boolean[]) is.readObject();

} catch(Exception ex) {ex.printStackTrace();}
for (int i = 0; i < 256; i++) {
JCheckBox check = (JCheckBox) checkboxList.get(i);
if (checkboxState[i]) {
check.setSelected(true);
} else {
check.setSelected(false);
}
} 
sequencer.stop(); 
buildTrackAndStart();
} 
// close method
} 
// close inner class
This is another inner class 
inside the BeatBox class.
Read the single object in the file (the 
boolean array) and cast it back to a 
boolean array (remember, readObject() 
returns a reference of type Object.
Now restore the state of each of the 
checkboxes in the ArrayList of actual 
JCheckBox objects (checkboxList).
Now stop whatever is currently playing, 
and rebuild the sequence using the new 
state of the checkboxes in the ArrayList.
deserializing the 
pattern
Sharpen your pencil
This version has a huge limitation! When you hit the “serializeIt” button, it 
serializes automatically, to a file named “Checkbox.ser” (which gets created if it 
doesn’t exist). But each time you save, you overwrite the previously-saved file.
Improve the save and restore feature, by incorporating a JFileChooser so that 
you can name and save as many different patterns as you like, and load/restore 
from any of your previously-saved pattern files.

---

serialization 
and
file I/O
you are here
4
465
Which of these do you think are, or should be, 
serializable? If not, why not? Not meaningful? 
Security risk? Only works for the current 
execution of the JVM? Make your best guess, 
without looking it up in the API.