Java Reference
In-Depth Information
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// Fig. 10.1: PolymorphismTest.java
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// Assigning superclass and subclass references to superclass and
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// subclass variables.
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public
class
PolymorphismTest
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{
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public
static
void
main(String[] args)
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{
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// assign superclass reference to superclass variable
CommissionEmployee commissionEmployee =
new
CommissionEmployee(
"Sue"
,
"Jones"
,
"222-22-2222"
,
10000
,
.06
);
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// assign subclass reference to subclass variable
BasePlusCommissionEmployee basePlusCommissionEmployee =
new
BasePlusCommissionEmployee(
"Bob"
,
"Lewis"
,
"333-33-3333"
,
5000
,
.04
,
300
);
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// invoke toString on superclass object using superclass variable
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System.out.printf(
"%s %s:%n%n%s%n%n"
,
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"Call CommissionEmployee's toString with superclass reference "
,
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"to superclass object"
,
commissionEmployee.toString()
);
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// invoke toString on subclass object using subclass variable
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System.out.printf(
"%s %s:%n%n%s%n%n"
,
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"Call BasePlusCommissionEmployee's toString with subclass"
,
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"reference to subclass object"
,
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basePlusCommissionEmployee.toString()
);
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// invoke toString on subclass object using superclass variable
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CommissionEmployee commissionEmployee2 =
basePlusCommissionEmployee;
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System.out.printf(
"%s %s:%n%n%s%n"
,
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"Call BasePlusCommissionEmployee's toString with superclass"
,
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"reference to subclass object"
,
commissionEmployee2.toString()
);
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}
// end main
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}
// end class PolymorphismTest
Call CommissionEmployee's toString with superclass reference to superclass
object:
commission employee: Sue Jones
social security number: 222-22-2222
gross sales: 10000.00
commission rate: 0.06
Call BasePlusCommissionEmployee's toString with subclass reference to
subclass object:
base-salaried commission employee: Bob Lewis
social security number: 333-33-3333
gross sales: 5000.00
commission rate: 0.04
base salary: 300.00
Fig. 10.1
|
Assigning superclass and subclass references to superclass and subclass variables.
(Part 1 of 2.)
