in java please follow the steps

A. Create two classes according to the given UML diagram (more description of the two classes is in Lecture 4): Number Display ClockDisplay -value: int -hour: NumberDisplay -limit: int -minute: NumberDisplay -second: NumberDisplay +Number Display(int) -displayString: String +getValue(): int +setValue(int): void +ClockDisplay() +getDisplayValue(): String +ClockDisplay(int, int) +increment(): void +setTime(int, int): void +getTime(): String +time Tick(): 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