Programming and Problem Solving with Java

720

6.

7.

9.There are actually only two classes in the proposed list in Exercise 8 in addition to

the file: “Participant” and “Time.” All of the other classes listed in Exercise 8 can be

represented as primitive types. However, there does need to be a “User Interface,”

which will be represented by the driver.

Class Name: MilkProduced Superclass: Cow Subclasses:

Responsibilities Collaborations

Create MilkProduced (name, ID number,

birth date, recent calving date)

None

Set milk amount (quantity)

Average is None

return double

Total output is None

return double

Set total to zero None

Class Name: Cow Superclass: Subclasses:

Responsibilities Collaborations

Create Cow (name, ID number, birth date,

recent calving date)

None

Know name None

return Name

Know ID number None

return String

Know birth date None

return Date

Know calving date None

return Date

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