HAS-A-Relationship (K&B)

[Sasha Ruehmkorf]

From K&B selftest of chapter 2:

Has-a relationships always rely on instance variables.

is the correct answer

From K&B BonusExam, question 52:

Has-a relationships are always defined with instance variables

is false, as

class variables can also be used to define has-a relationships

Could someone plaese clarify?
(Searching the web just confused me more... :-( )

[Chandra Bhatt]

Discussed here


Thanks,

[Sasha Ruehmkorf]

Thanks, but that topic is about is-a relationships. I don't see the connection.

[Chandra Bhatt]

Hi Sasha,

You are right, Has-A Relationship can also be acquired using class variables.


Thanks,