nhu313 974b7a0ab1 changed description back to Leon's original description because are even more confused now | 6 лет назад | |
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src | 7 лет назад | |
.gitignore | 7 лет назад | |
.project | 7 лет назад | |
README.md | 6 лет назад | |
pom.xml | 7 лет назад |
ZipCodeWilmington
class which mediates a composite Students
and Instructors
singleton reference.Person
ClassPerson
class.
final
field named id
of type long
.name
of type String
.Person
constructor should have a parameter of type long
which sets the id
field to the respective value.getId()
method which returns the Person
object's id
field.getName()
method which returns the Person
object's name
field.setName()
method which sets the Person
object's name
field.-
Person
TestPerson
class.
testConstructor
method which ensures that a Person
object's id
field is being set upon construction.testSetName
method which ensures that a Person
object's name
variable is being set by invoking the .setName
method.-
Learner
InterfaceLearner
interface.
Learner
should declare one method signature:
learn
double numberOfHours
void
-
Student
ClassStudent
class such that:
Student
is a subclass of Person
Student
implements the Learner
interfaceStudent
should have an instance variable totalStudyTime
of type double
Student
should have a concrete implementation of the learn
method which increments the totalStudyTime
variable by the specified numberOfHours
argument.Student
should have a getTotalStudyTime()
method which returns the totalStudyTime
instance variable.-
Student
TestStudent
class.
testImplementation
method that asserts that a Student
is an instanceof
a Learner
.testInheritance
method that asserts that a Student
is an instanceof
a Person
.testLearn
method that ensures a Student
's totalStudyTime
instance variable is incremented by the specified numberOfHours
by invoking the .learn
method.-
Teacher
InterfaceCreate a Teacher
interface.
Teacher
should declare a teach
method signature:
teach
Learner learner
double numberOfHours
void
Teacher
should declare a lecture
method signature:
lecture
Learner[] learners
double numberOfHours
void
-
Instructor
ClassInstructor
class such that:
Instructor
is a subclass of Person
Instructor
implements the Teacher
interfaceInstructor
should have a concrete implementation of the teach
method which invokes the learn
method on the specified Learner
object.Instructor
should have a concrete implementation of the lecture
method which invokes the learn
method on each of the elements in the specified array of Learner
objects.
numberOfHours
should be evenly split amongst the learners.
double numberOfHoursPerLearner = numberOfHours / learners.length;
-
Instructor
TestInstructor
class.
testImplementation
method that asserts that an Instructor
is an instanceof
a Teacher
.testInheritance
method that asserts that a Instructor
is an instanceof
a Person
.testTeach
method that ensures when an Instructor
invokes the teach
method, a respective student's totalStudyTime
instance variable is incremented by the specified numberOfHours
.testLecture
method that ensures when an Instructor
invokes the lecture
method, a respective array of students' totalStudyTime
instance variables is incremented by numberOfHours/students.length
.-
People
classPeople
class.
ArrayList
field of Person
objects named personList
.add
which adds a Person
to the personList
.findById
which makes use of a long id
parameter to return a Person
object with the respective id
field.remove
which makes use of a Person person
parameter to remove a respective Person
object.remove
which makes use of a long id
parameter to remove a Person
object with the respective id
field.getCount
which returns the size of personList
.getArray
which returns an array representation of the personList
field.removeAll
which clears our personList
field.
-
People
TestPeople
class.
testAdd
method which ensures that our personList
in our People
class populated with respective Person
objects following invokation of the add
method.testRemove
method which ensures that the personList
in a People
object is depopulated with a respective Person
object following the invokation of the remove
method.testFindById
method which ensures that a respective Person
object with a respective id
field is returned upon invokation of the findById
method on a respective People
object.-
Students
singletonStudents
class.
People
class.final
field named INSTANCE
of type Students
.INSTANCE
field with respective Student
representations of your colleagues.
id
field.getInstance
method which returns the INSTANCE
field.
-
Students
singletonTestStudents
class.
test
method which ensures that each of the students in your current cohort are in your Students
singleton.-
Instructors
singletonPart 7
as a reference.Instructors
singleton which represents the set of instructors at ZipCodeWilmington.TestInstructors
class.-
ZipCodeWilmington
ClassZipCodeWilmington
singleton.
Students
called students
.Instructors
called instructors
.hostLecture
which makes use of a Teacher teacher, double numberOfHours
parameter to host a lecture
to the composite people
field in the students
reference.hostLecture
which makes use of a long id, double numberOfHours
parameter to identify a respective Instructor
to host a lecture
to the composite people
field in the cohort
reference.-
ZipCodeWilmington
TestZipCodeWilmington
class.
testHostLecture
method which ensures that each of the Student
's totalStudyTime
instance variable is incremented by the specified numberOfHours
upon invoking the hostLecture
method.-
findById
, and hostLecture
methods require an intermediate casting trick.People
class.-
People
classPeople
signature to enforce that it is a container for objects of type E
such that E
is a subclass of Person
.people
field to enforce that is a container of objects of type E
.add
method to ensure that it handles object of type E
.findById
method to ensure that it returns an object of type E
.getArray
method signature by declaring it abstract
of return tyoe E
.
-
People
subclassesStudents
class signature to ensure that it is a subclass of People
of parameterized type Student
.Instructors
class signature to ensure that it is a subclass of People
of parameterized type Instructor
.getArray
method in each of these classes.-
ZipCodeWilmington
classhostLecture
method in the ZipCodeWilmington
class by removing any intermediate casting trick(s).-
TestStudents
, TestInstructors
, TestPeople
, TestZipCodeWilmington
classes were not affected by the refactor.-
findById
makes it difficult to intuitively identify which Person
object is being returned. To remedy this issue, we can make use of an enum
which manipulates a composite instructor
object.-
Educator
enumEducator
.
Teacher
.Instructors
class.Instructor
and assign it to a final instructor
field upon construction. The instructor
should be added to the Instructors
singleton.teach
and lecture
method should be differed to the composite instructor
reference.double timeWorked
field which keeps track of the hours that the Educator
has taught.-
Educator
Part 5
as a reference.-
ZipCodeWilmington
hostLecture
method can handle objects of type Educator
.