Question

Fill in the classes to represent salaried and hourly employees. Salaried employees are paid for forty hours no matter how much they actually work. Hourly employees are paid their hourly rate up to forty hours of work, and 1.5 times their normal rate for overtime.

Employee.java

public abstract class Employee {
protected double payRate;
  
public Employee(double payRate) {
this.payRate = payRate;
}
  
   abstract public double computePay(double hours);
}

HourlyEmployee.java

public class HourlyEmployee extends Employee {
   public HourlyEmployee(double payRate) {
   }
  
   public double computePay(double hours) {
       return 0;
   }
}

SalariedEmployee.java

public class SalariedEmployee extends Employee {
   public SalariedEmployee(double payRate) {
   }
  
   public double computePay(double hours) {
       return 0;
   }
}

Answer 1

Employee

//Abstract class Employee
public abstract class Employee 
{
        //Instance variable
        protected double payRate;

        //Constructor
        public Employee(double payRate)
        {
                //Initializing instance variable from value received as argument
                this.payRate = payRate;
        }
        
        //Abstract method to compute pay of Employee
        abstract public double computePay(double hours);
}

SalariedEmployee

//Class SalariedEmployee derived from base class Employee
public class SalariedEmployee extends Employee 
{       
        //Constructor
        public SalariedEmployee(double payRate) 
        {
                //Calling base class constructor
                super(payRate);
        }

        //Overridden method to compute pay
        @Override
        public double computePay(double hours) 
        {
                //Returning pay for default 40 hours
                return 40 * this.payRate;
        }
}

HourlyEmployee

//Class HourlyEmployee derived from base class Employee
public class HourlyEmployee extends Employee 
{
        //Constructor
         public HourlyEmployee(double payRate) 
         {
                 //Calling base class constructor
                 super(payRate);
         }

        //Overridden method to compute pay       
        @Override
        public double computePay(double hours)
        {
                //Checking whether hours is greater than 40 or not
                if(hours <= 40)
                        //Returning pay when hours less than or equal to 40
                        return hours * this.payRate;
                else
                        //Returning pay when hours greater than 40
                        return (40*this.payRate) + ((hours-40)*this.payRate*1.5);
        }
}

Since, only these three classes are asked to fill, there won't be any output for this