implements set and map

[Ike]

Is anyone aware of a Collections Object that implements both the Set and Map
Interfaces concurrently? Is it possible to even create one?

Thanks, Ike

 

[Thomas Weidenfeller]

Is anyone aware of a Collections Object that implements both the Set and Map
Interfaces concurrently? Is it possible to even create one?

Why do you want to? Map.keySet() gives you a view on the map's keys as a
Set. Map.entrySet() gives you a view on the entries in a map as a Set.

/Thomas

 

[Ike]

Thanks Thomas....I hadn't realised it was right under my nose! -Ike

 

[Gerbrand van Dieijen]

Thomas Weidenfeller schreef:

Why do you want to? Map.keySet() gives you a view on the map's keys as a
Set. Map.entrySet() gives you a view on the entries in a map as a Set.

/Thomas

Apache Jakarta Commons also include a Map where the values (right side)
can be used as keys too.
I think that is as 'concurrently' the Map/Set implementation can be, the
Map is merely an extension of Set.

 

[Christian Kaufhold]

Is anyone aware of a Collections Object that implements both the Set and Map
Interfaces concurrently? Is it possible to even create one?

No, because remove(Object) (1.5?), equals, and hashCode clash.


Christian