Program:

NOTE: Please refer the textbook for the classes Employee, Date, and HourlyEmployee

// Employee.java
import java.util.Scanner;
public class Employee
{
	// inner class
	public class Date
	{
		// Refer the textbook for the code of this Date class
	}

	private String name;
	private Date hireDate;

	// Refer the textbook for the code of this Employee class
}

// HourlyEmployee.java
public class HourlyEmployee extends Employee
{
	// Refer the textbook for the code of this HourlyEmployee class
}

// TestHourlyEmployee.java
public class TestHourlyEmployee
{
	public static void main(String[] args)
	{
		Employee employee1 = new Employee();
		Employee.Date date1 = employee1.new Date();

		HourlyEmployee hourlyEmployee1 = new HourlyEmployee(
				"John Smith", date1, 45.45, 172);

		HourlyEmployee hourlyEmployee2 = new HourlyEmployee();
		hourlyEmployee2.setName("Steven Lee");
		hourlyEmployee2.setHireDate(employee1.new Date(4, 28,
				2015));
		hourlyEmployee2.setRate(50.50);
		hourlyEmployee2.setHours(168);

		System.out.println("Hourly Employee #1");
		System.out.println(hourlyEmployee1);
		System.out.printf("Total pay: $%.2f\n", hourlyEmployee1.getPay());

		System.out.println("\nHourly Employee #2");
		System.out.println(hourlyEmployee2);
		System.out.printf("Total pay: $%.2f\n", hourlyEmployee2.getPay());
	}
}

Output:

Hourly Employee #1
John Smith January 1, 1000
$45.45 per hour for 172.0 hours
Total pay: $7817.40

Hourly Employee #2
Steven Lee April 28, 2015
$50.5 per hour for 168.0 hours
Total pay: $8484.00