Exercise 1: A. Create two classes according to the given UML diagram NumberDisplay ClockDispla -hour: NumberDisplay minute: NumberDisplay -second: NumberDisplay -displayString: String -value: int -limit: int +NumberDisplay(int) +getValue): int +setValue(int): void +get DisplayValue): String +increment): void +ClockDisplay() +ClockDisplay(int, int) +setTime(int, int): void +getTime): String +timeTick): void B. To test your classes, create the test class and write the main method as follows: public static void main (String[] args) ClockDisplay cd -new ClockDisplay (0, 0, 0) cd.setTime (10, 58, 50) for (int i = 0; i