Package java.util.concurrent

Interface Summary

Interface	Description
Callable<V>	A task that returns a result and may throw an exception.
ConcurrentMap<K,V>	A Map providing additional atomic putIfAbsent, remove, and replace methods.
Executor	An object that executes submitted Runnable tasks.

Class Summary

Class	Description
ConcurrentHashMap<K,V>	A hash table supporting full concurrency of retrievals and adjustable expected concurrency for updates.

Enum Summary

Enum	Description
TimeUnit	A TimeUnit represents time durations at a given unit of granularity and provides utility methods to convert across units, and to perform timing and delay operations in these units.