public abstract interface ConcurrentNavigableMap<K, V>
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A ConcurrentMap supporting NavigableMap operations, and recursively so for its navigable sub-maps.

This interface is a member of the Java Collections Framework.

extends ConcurrentMap<K, V>, NavigableMap<K, V>

Parameters:
<K>    the type of keys maintained by this map
<V>    the type of mapped values

Since:  1.6