public class TestSchedule {
    public static void main( String[] args ) throws CloneNotSupportedException {
        Schedule original = new Schedule();
        original.setHours( 0, 9, 17 ); // Monday

        Schedule cloned = ( Schedule )original.clone();
        cloned.setHours( 0, 10, 18 );  // Modify clone only

        System.out.println( "Original Monday start: " + original.getStart( 0 ));
        System.out.println( "Cloned Monday start: " + cloned.getStart( 0 ));
    }
}