Is it better to use List or Collection?

Question

I have an object that stores some data in a list. The implementation could change later, and I don\'t want to expose the internal implementation to the end user. However, the us

Answer 1

Returning a List is in line with programming to the Highest Suitable Interface.

Returning a Collection would cause ambiguity to the user, as a returned collection could be either: Set, List or Queue.