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Grab a Piece of Paper! |
Given a list of attributes and behaviors for two classes:
- identify common attributes and behaviors that could be part of a superclass when creating a class hierarchy.
- list the remaining attributes and behaviors for the subclasses.
- name the superclass.
- write is-a statements for each class with the superclass.
- evaluate your is-a statements. Do they accurately represent the relationship? For example, "Student is-a Person"
Cars and Trucks
| Car |
Truck |
Superclass: Give it a name |
| Attributes |
| String brand |
String brand |
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| String color |
String color |
|
| int year |
int year |
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| int numberOfDoors |
double cargoCapacity |
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| boolean hasSunroof |
boolean hasFourWheelDrive |
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|
|
|
| Behaviors |
| start() |
start() |
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| stop() |
stop() |
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| displayInfo() |
displayInfo() |
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| turnOnAirConditioning() |
turnOnAirConditioning() |
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| openTrunk() |
loadCargo() |
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|
unLoadCargo() |
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Teacher and Custodian
| Teacher |
Custodian |
Superclass: Give it a name |
| Attributes |
| String name |
String name |
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| int employeeId |
int employeeId |
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| double hourlyRate |
double hourlyRate |
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| String subject |
String assignedArea |
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| int roomNumber |
boolean hasMasterKeys |
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|
|
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| Behaviors |
| clockIn() |
clockIn() |
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| clockOut() |
clockOut() |
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| displayEmployeeInfo() |
displayEmployeeInfo() |
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| teachLesson() |
cleanArea() |
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| gradeAssignments() |
lockBuilding() |
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