// Fig. 10.14: HourlyEmployee.java
// HourlyEmployee class extends Employee.

public class HourlyEmployee extends Employee {
  private double wage;   // wage per hour
  private double hours;  // hours worked for week

  // constructor
  public HourlyEmployee( String first, String last,
                         String socialSecurityNumber,
                         double hourlyWage, double hoursWorked )
  {
    super( first, last, socialSecurityNumber );
    setWage( hourlyWage );
    setHours( hoursWorked );
  }

  // set hourly employee's wage
  public void setWage( double wageAmount )
  {
    wage = wageAmount < 0.0 ? 0.0 : wageAmount;
  }

  // return wage
  public double getWage()
  {
    return wage;
  }

  // set hourly employee's hours worked
  public void setHours( double hoursWorked )
  {
    hours = ( hoursWorked >= 0.0 && hoursWorked <= 168.0 ) ?
            hoursWorked : 0.0;
  }

  // return hours worked
  public double getHours()
  {
    return hours;
  }

  // calculate hourly employee's pay;
  // override abstract method earnings in Employee
  public double earnings()
  {
    if ( hours <= 40 )  // no overtime
      return wage * hours;
    else
      return 40 * wage + ( hours - 40 ) * wage * 1.5;
  }

  // return String representation of HourlyEmployee object
  public String toString()
  {
    return "\nhourly employee: " + super.toString();
  }

} // end class HourlyEmployee