Where will be a is a relationship will occur?

[Bruno Korcinski]

Hi guys !
I'm really confused with this Q.
Do you have idea?
Thanks.
Igor.
Where will be a is a relationship will occur select one?
A. interface Person
class Employee implements Person
B. interface Shape
interface Rectangle extends Shape

C. interface Component
class Objects implements Component
{Component [] Component;}

[Anupam Sinha]

Hi Igor
Actually all of them have a "is a" relationship. But it appears that they want answer B to be the correct one because it extends a class while others implements an interface.

[Bruno Korcinski]

thanks for idea...what I shoud preffer...
I hate not clear Qs....:-)

[Suresh Selvaraj]

Answer choice B is correct.
"is a " relationship exists when a subclass extends the behaviour of a Super class or if an interface extends another interface.
interface Rectangle extends Shape - reflects "is a " type of relationship.
"like a " relationship exists when a class implements an interface.
Hence, answer choices A and C reflect "like a" type of relationship.

[Anupam Sinha]

Hi Suresh
But this sounds quite wierd "Employee is not a person." but "Employee is like a person". Is this documented anywhere.

Well anyways companies should treat their employee as a person not like a person.
[ June 24, 2003: Message edited by: Anupam Sinha ]