Interface dependant on class

[Salim Mohamed]

When can I say that an interface depends on a class ?

[Dinesh Kumar]

An interface can extend another interface but I don't think it can extend a class so it can't depend on a class.
...Dinesh

[Tina Coleman]

From 'UML Distilled':
'A dependency exists between two elements if changes to the definition of one element may cause changes to the other.'
So, if an interface uses a class (rather than an interface) as a parameter or as a return, then the interface would be dependent upon the class.