I have no idea what to do for this programming challenge. Here it is from the book Starting Out With Java: From Control Structures through Data Structures (3rd Edition) by Tony Gaddis and Godfrey Muganda. Chapter 11, programming challenge 10.

10. Exception Project

This assignment assumes you have completed Programming Challenge 1 of Chapter 10 (Employee and ProductionWorker Classes). Modify the Employee andn ProductionWorker classes so they throw exceptions when the following errors occur:

- The Employee class should throw an exception named InvalidEmployeeNumber when it receives and invalid employee number.

- The ProductionWorker class should throw an exception named InvalidShift when it receives an invalid shift.

- The ProductionWorker class should throw an exception named InvalidPayRate when it receives a negative number for the hourly pay rate.

Write a test program that demonstrates how each of these exception conditions works.

(For reference) Chapter 10, project 1

Design a class named Employee. The class should keep the following information in fields: Employee name Employee number in the format XXX-L, where each X is a digit within the range 0-9 and the Lis aletter within the range A-M. Hire date * Write one or more constructors and the appropriate accessor and mutator methods for the class. Next, write a class named ProductionWorker that extends the Employee class. The ProductionWorker class should have fields to hold the following information: Shift (an integer) Hourly pay rate (a double) The workday is divided into two shifts: day and night. The shift field will be an integer value representing the shift that the employee works. The day shift is shift 1 and the night shift is shift 2. Write one or more constructors and the appropriate accessor and mutator methods for the class. Demonstrate the classes by writing a program that uses a ProductionWorker object.