Re: Signature collision between methods in superclass and interface:
suggestions?
Roedy Green wrote:
Do you really want your object to behave directly as both a LinkedList
and a TierMap? That sounds like a very weird duck. LinkedList is a
detail of implementation, not likely something you want your clients to
fiddle with directly.
Simon Brooke wrote:
No, it doesn't need to behave like a linked list at all, except that the
caller needs to be able to add and remove tiers. In fact, a stack might
be a better implementation than a linked list - the caller does not need
to have direct access to lower level tiers.
This proves Roedy's point beautifully. If you do expose the 'List' (let alone
'LinkedList') detail of implementation, you commit to that as part of the
public contract and cannot easily change to 'Stack' when you realize that it
would improve things. Keep that part hidden as suggested.
Roedy Green wrote:
So create a class that does not extend LinkedList, but rather has
private field pointing to one. You can wrap some methods to fiddle with
the LinkedList externally if necessary.
Only expose publicly those aspects that are part of the public contract of the
type.
--
Lew
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