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Book example about Association relationship
Hi,
In page 22 I see the example of pseudo-code
class Professor is field Student student //... method teach(Course c) is // ... this.student.remember(c.getKnowledge())
This example is used with Association relationship and I quote
Howev- er, since the student field is always accessible to any method of the Professor , the Student class is not just a dependency, but also an association
My question is regarding the pseudo code.
if in the pseudocode appear as "field Student student" that doesn´t mean that we are instantiating an instance of the Student object? if that is correct, and we are creating an instance of Student in Proffesor, that will not be a composition relationship ( because when the professorobject dies, the student object also die ) ?
thank you, Bruno.
Служба підтримки клієнтів працює на UserEcho
Hi Bruno!
Yes, you understand the implications of composition correctly. However, the Professor class wasn't meant to instantiate Student objects. It may receive a reference to a student by other means (via the constructor or some setter).