// Fig. 7.9: HourlyWorker.java
// Definition of class HourlyWorker

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

   // Constructor for class HourlyWorker
   public HourlyWorker( String first, String last, 
                        double w, double h )
   {
      super( first, last );   // call superclass constructor
      setWage( w );
      setHours( h );
   }
   
   // Set the wage
   public void setWage( double w )
      { wage = ( w > 0 ? w : 0 ); }
   
   // Set the hours worked
   public void setHours( double h )
      { hours = ( h >= 0 && h < 168 ? h : 0 ); }
   
   // Get the HourlyWorker's pay
   public double earnings() { return wage * hours; }
   
   public String toString() 
   {
      return "Hourly worker: " + super.toString();
   }
}