Java Reference
In-Depth Information
22
this
.baseSalary = baseSalary;
23
}
24
25
// set base salary
26
public
void
setBaseSalary(
double
baseSalary)
27
{
28
if
(baseSalary <
0.0
)
29
throw new
IllegalArgumentException(
30
"Base salary must be >= 0.0"
);
31
32
this
.baseSalary = baseSalary;
33
}
34
35
// return base salary
36
public
double
getBaseSalary()
37
{
38
return
baseSalary;
39
}
40
41
// calculate earnings
42
@Override
43
public
double
earnings()
44
{
45
// not allowed: commissionRate and grossSales private in superclass
return
baseSalary + (
commissionRate
*
grossSales
);
46
47
}
48
49
// return String representation of BasePlusCommissionEmployee
50
@Override
51
public
String toString()
52
{
53
// not allowed: attempts to access private superclass members
return
String.format(
"%s: %s %s%n%s: %s%n%s: %.2f%n%s: %.2f%n%s: %.2f"
,
"base-salaried commission employee"
,
firstName
,
lastName
,
"social security number"
,
socialSecurityNumber
,
"gross sales"
,
grossSales
,
"commission rate"
,
commissionRate
,
"base salary"
, baseSalary);
54
55
56
57
58
59
60
}
61
}
// end class BasePlusCommissionEmployee
BasePlusCommissionEmployee.java:46: error: commissionRate has private access
in CommissionEmployee
return baseSalary + (commissionRate * grossSales);
^
BasePlusCommissionEmployee.java:46: error: grossSales has private access in
CommissionEmployee
return baseSalary + (commissionRate * grossSales);
^
BasePlusCommissionEmployee.java:56: error: firstName has private access in
CommissionEmployee
"base-salaried commission employee", firstName, lastName,
^
Fig. 9.8
| private
superclass members cannot be accessed in a subclass. (Part 2 of 3.)
