Java Reference
In-Depth Information
Display 8.6
Employee
Class and Its Derived Classes
(part 1 of 2)
These show the details needed for the current discussion. You
should not need to review the entire class definitions from Chapter 7.
Complete definitions of all these classes are given in the subdirectory
for this chapter on the website that comes with this text.
1
public class Employee
2 {
3
The class
Date
is defined in Display 4.13, but the
details are not important to the current
discussion. There is no need to review the definition
of the class
Date.
private
String name;
4
private
Date hireDate;
5
public
Employee()
The body of the constructor is given in Display 7.2 should initialize the
instance variables, but the details are not needed for this discussion.
6
public boolean
equals(Object otherObject)
The body of the method equals is the same as in Display 7.10, but the details of the definition are not
important to the current discussion.
All other constructor and other method definitions are exactly the same as in Display 7.2.
The class
Employee
has no method named
getPay
.
7 }
1
public class
SalariedEmployee
extends
Employee
2 {
3
private double
salary;
//annual
4
/**
5
Returns the pay for the month
.
6
*/
7
public double
getPay()
8 {
9
return
salary / 12;
10 }
11
public boolean
equals(Object otherObject)
The rest of the definition of equals is the same as in the answer to Self-Test Exercise 20 of Chapter 7,
but the details of the definition are not important to the current discussion.
All constructor and other method definitions are exactly the same as in Display 7.5.
12 }
(continued)
