wild card generics

[aslika bahini]

Hi All,

List<?> list = new ArrayList<Dog>();
while reference can be abstract and polymorphic, why the actual object
must be of a specific type?

If I say like this List<?> list = new ArrayList();

what is the difference between this two?

please help!
Thanks
regards
samura

[aslika bahini]

If we didn't override equals() different Objects can't be considered equal


why we need different objects to be considered equal?
I still have doubt with overridding hashcode and equals()

please help!
Thanks

[dolly shah]

Post different topic in a different post.