Polymorphism - Java Software Solutions: Foundations of Program Design - page 495

LISTING 10.3
//********************************************************************
// StaffMember.java Author: Lewis/Loftus
//
// Represents a generic staff member.
//********************************************************************
abstract public class StaffMember
{
protected String name;
protected String address;
protected String phone;
//-----------------------------------------------------------------
// Constructor: Sets up this staff member using the specified
// information.
//-----------------------------------------------------------------
public StaffMember (String eName, String eAddress, String ePhone)
{
name = eName;
address = eAddress;
phone = ePhone;
}
//-----------------------------------------------------------------
// Returns a string including the basic employee information.
//-----------------------------------------------------------------
public String toString()
{
String result = "Name: " + name + "\n";
result += "Address: " + address + "\n";
result += "Phone: " + phone;
return result;
}
//-----------------------------------------------------------------
// Derived classes must define the pay method for each type of
// employee.
//-----------------------------------------------------------------
public abstract double pay();
}