AccelerometerDemo.java

• the entry point for the sample application
• contains constants that define the force of gravity and the coefficient of friction of the surface that the ball rolls on
• contains methods that read values from the accelerometer in as they occur and these methods apply the values to the movement of the ball
• contains methods that check if the BlackBerry®device that is running the sample application has an accelerometer
• contains an inner class, DrawThread, that continuously draws the ball's changing position on the screen
• contains menu items to start and stop the sample application