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HAS-A-Relationship (K&B)

 
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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... :-( )
 
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Discussed here


Thanks,
 
Sasha Ruehmkorf
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Thanks, but that topic is about is-a relationships. I don't see the connection.
 
Chandra Bhatt
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Hi Sasha,

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


Thanks,
 
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