Java Reference
In-Depth Information
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// Fig. 9.11: BasePlusCommissionEmployee.java
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// BasePlusCommissionEmployee class inherits from CommissionEmployee
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// and accesses the superclass's private data via inherited
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// public methods.
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public
class
BasePlusCommissionEmployee
extends
CommissionEmployee
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{
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private
double
baseSalary;
// base salary per week
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// six-argument constructor
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public
BasePlusCommissionEmployee(String firstName, String lastName,
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String socialSecurityNumber,
double
grossSales,
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double
commissionRate,
double
baseSalary)
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{
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super
(firstName, lastName, socialSecurityNumber,
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grossSales, commissionRate);
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// if baseSalary is invalid throw exception
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if
(baseSalary <
0.0
)
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throw new
IllegalArgumentException(
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"Base salary must be >= 0.0"
);
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this
.baseSalary = baseSalary;
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}
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// set base salary
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public
void
setBaseSalary(
double
baseSalary)
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{
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if
(baseSalary <
0.0
)
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throw new
IllegalArgumentException(
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"Base salary must be >= 0.0"
);
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this
.baseSalary = baseSalary;
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}
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// return base salary
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public
double
getBaseSalary()
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{
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return
baseSalary;
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}
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// calculate earnings
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@Override
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public
double
earnings()
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{
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return
getBaseSalary() +
super
.earnings();
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}
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// return String representation of BasePlusCommissionEmployee
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@Override
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public
String toString()
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{
Fig. 9.11
| BasePlusCommissionEmployee
class inherits from
CommissionEmployee
and
accesses the superclass's
private
data via inherited
public
methods. (Part 1 of 2.)
