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# Interface collections.Keyed

public interface interface Keyed
extends Serializable

Keyed is an interface most useful in association with SortedCollections. Any class implementing Keyed contains method key, that returns an object serving as a sorting key for the rest of the object.

The DefaultComparator class checks to see if its arguments are Keyed, and if so uses the keys as the basis for comparison.

##

key()
  Return an object serving as a comparison key

##

key

     public abstract Object key()

  Return an object serving as a comparison key

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