Exam 2 Sample Questions from Spring 2012

Part II, Question: #2

// instantiate and activate three sensors
Sensor s1 = new Sensor(); s1.activate();
Sensor s2 = new Sensor(); s2.activate();
Sensor s3 = new Sensor(); s3.activate();

// instantiate one remote using 1234
final int CODE = 1234;
Remote remote = new Remote(CODE);

// instantiate a bell
Bell bell = new Bell();

// continually monitor
final int ALARM = 100;
final int NO_ALARM = 0;

while ( remote.disarm() != CODE ) {
    if ( s1.sense() || s2.sense() || s3.sense() || 
        remote.panic() == CODE ) {
        bell.activate( ALARM );
    }
}

bell.activate( NO_ALARM );
s1.deactivate();
s2.deactivate();
s3.deactivate();