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In addition to the BlockingQueue interface,
Java 5 also added new collection classes (concurrent collections),
including the Queue interface, as well as high-performance
concurrent implementations of Map, List,
and Queue.
Specifically:
ConcurrentMap interface -- A Map
providing additional atomic putIfAbsent, remove,
and replace methods.ConcurrentNavigableMap interface -- A ConcurrentMap
supporting NavigableMap operations, and recursively so for its
navigable sub-maps.ConcurrentHashMap -- A hash table supporting
full concurrency of retrievals and adjustable expected concurrency for
updates.ConcurrentLinkedQueue -- An unbounded
thread-safe queue based on linked nodes.ConcurrentSkipListMap -- A scalable
concurrent ConcurrentNavigableMap implementation.ConcurrentSkipListSet -- A scalable
concurrent NavigableSet implementation based on a ConcurrentSkipListMap.
Also, there are copy-on-write thread-safe collections:
CopyOnWriteArrayList -- A thread-safe
variant of ArrayList in which all mutative operations (add,
set, and so on) are implemented by making a fresh copy of
the underlying array.CopyOnWriteArraySet -- A Set
that uses an internal CopyOnWriteArrayList for all of
its operations.
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