Polymorphism - Java Software Solutions: Foundations of Program Design - page 499

LISTING 10.6
//********************************************************************
// Executive.java Author: Lewis/Loftus
//
// Represents an executive staff member, who can earn a bonus.
//********************************************************************
public class Executive extends Employee
{
private double bonus;
//-----------------------------------------------------------------
// Constructor: Sets up this executive with the specified
// information.
//-----------------------------------------------------------------
public Executive (String eName, String eAddress, String ePhone,
String socSecNumber, double rate)
{
super (eName, eAddress, ePhone, socSecNumber, rate);
bonus = 0; // bonus has yet to be awarded
}
//-----------------------------------------------------------------
// Awards the specified bonus to this executive.
//-----------------------------------------------------------------
public void awardBonus ( double execBonus)
{
bonus = execBonus;
}
//-----------------------------------------------------------------
// Computes and returns the pay for an executive, which is the
// regular employee payment plus a one-time bonus.
//-----------------------------------------------------------------
public double pay()
{
double payment = super .pay() + bonus;
bonus = 0;
return payment;
}
}