Package jsr166y

Class Summary
ConcurrentReferenceHashMap<K,V> An advanced hash table supporting configurable garbage collection semantics of keys and values, optional referential-equality, full concurrency of retrievals, and adjustable expected concurrency for updates.
 

Enum Summary
ConcurrentReferenceHashMap.Option  
ConcurrentReferenceHashMap.ReferenceType An option specifying which Java reference type should be used to refer to a key and/or value.