All three new interfaces fit neatly into the existing collections type hierarchy, with List having SequencedCollection as its immediate superinterface, Deque having SequencedCollection as its ...

With the sequenced collections proposal, all of the new methods declared in the new interfaces have default implementations. Sequenced collections would be added to the standard edition of Java ...

The interfaces java.util.List and java.util.Set extend Collection, representing more specialized data structures and adding more operations and/or constraints.