| Package | Description | 
|---|---|
| java.nio.channels | Defines channels, which represent connections to entities that are capable of
 performing I/O operations, such as files and sockets; defines selectors, for
 multiplexed, non-blocking I/O operations. | 
| java.nio.file | Defines interfaces and classes for the Java virtual machine to access files,
 file attributes, and file systems. | 
| java.nio.file.attribute | Interfaces and classes providing access to file and file system attributes. | 
| java.util.concurrent | Utility classes commonly useful in concurrent programming. | 
| java.util.concurrent.locks | Interfaces and classes providing a framework for locking and waiting
 for conditions that is distinct from built-in synchronization and
 monitors. | 
| javax.swing | Provides a set of "lightweight"
(all-Java language) components that,
to the maximum degree possible, work the same on all platforms. | 
| Modifier and Type | Method and Description | 
|---|---|
| abstract boolean | AsynchronousChannelGroup. awaitTermination(long timeout,
                TimeUnit unit)Awaits termination of the group. | 
| abstract <A> void | AsynchronousSocketChannel. read(ByteBuffer[] dsts,
    int offset,
    int length,
    long timeout,
    TimeUnit unit,
    A attachment,
    CompletionHandler<Long,? super A> handler)Reads a sequence of bytes from this channel into a subsequence of the
 given buffers. | 
| abstract <A> void | AsynchronousSocketChannel. read(ByteBuffer dst,
    long timeout,
    TimeUnit unit,
    A attachment,
    CompletionHandler<Integer,? super A> handler)Reads a sequence of bytes from this channel into the given buffer. | 
| abstract <A> void | AsynchronousSocketChannel. write(ByteBuffer[] srcs,
     int offset,
     int length,
     long timeout,
     TimeUnit unit,
     A attachment,
     CompletionHandler<Long,? super A> handler)Writes a sequence of bytes to this channel from a subsequence of the given
 buffers. | 
| abstract <A> void | AsynchronousSocketChannel. write(ByteBuffer src,
     long timeout,
     TimeUnit unit,
     A attachment,
     CompletionHandler<Integer,? super A> handler)Writes a sequence of bytes to this channel from the given buffer. | 
| Modifier and Type | Method and Description | 
|---|---|
| WatchKey | WatchService. poll(long timeout,
    TimeUnit unit)Retrieves and removes the next watch key, waiting if necessary up to the
 specified wait time if none are yet present. | 
| Modifier and Type | Method and Description | 
|---|---|
| static FileTime | FileTime. from(long value,
    TimeUnit unit)Returns a  FileTimerepresenting a value at the given unit of
 granularity. | 
| long | FileTime. to(TimeUnit unit)Returns the value at the given unit of granularity. | 
| Modifier and Type | Method and Description | 
|---|---|
| static TimeUnit | TimeUnit. valueOf(String name)Returns the enum constant of this type with the specified name. | 
| static TimeUnit[] | TimeUnit. values()Returns an array containing the constants of this enum type, in
the order they are declared. | 
| Modifier and Type | Method and Description | 
|---|---|
| boolean | CountDownLatch. await(long timeout,
     TimeUnit unit)Causes the current thread to wait until the latch has counted down to
 zero, unless the thread is interrupted,
 or the specified waiting time elapses. | 
| int | CyclicBarrier. await(long timeout,
     TimeUnit unit)Waits until all parties have invoked
 await on this barrier, or the specified waiting time elapses. | 
| int | Phaser. awaitAdvanceInterruptibly(int phase,
                         long timeout,
                         TimeUnit unit)Awaits the phase of this phaser to advance from the given phase
 value or the given timeout to elapse, throwing  InterruptedExceptionif interrupted while waiting, or
 returning immediately if the current phase is not equal to the
 given phase value or this phaser is terminated. | 
| boolean | ThreadPoolExecutor. awaitTermination(long timeout,
                TimeUnit unit) | 
| boolean | ExecutorService. awaitTermination(long timeout,
                TimeUnit unit)Blocks until all tasks have completed execution after a shutdown
 request, or the timeout occurs, or the current thread is
 interrupted, whichever happens first. | 
| boolean | ForkJoinPool. awaitTermination(long timeout,
                TimeUnit unit)Blocks until all tasks have completed execution after a shutdown
 request, or the timeout occurs, or the current thread is
 interrupted, whichever happens first. | 
| long | TimeUnit. convert(long sourceDuration,
       TimeUnit sourceUnit)Convert the given time duration in the given unit to this
 unit. | 
| V | Exchanger. exchange(V x,
        long timeout,
        TimeUnit unit)Waits for another thread to arrive at this exchange point (unless
 the current thread is interrupted or
 the specified waiting time elapses), and then transfers the given
 object to it, receiving its object in return. | 
| V | ForkJoinTask. get(long timeout,
   TimeUnit unit)Waits if necessary for at most the given time for the computation
 to complete, and then retrieves its result, if available. | 
| V | FutureTask. get(long timeout,
   TimeUnit unit) | 
| V | Future. get(long timeout,
   TimeUnit unit)Waits if necessary for at most the given time for the computation
 to complete, and then retrieves its result, if available. | 
| long | Delayed. getDelay(TimeUnit unit)Returns the remaining delay associated with this object, in the
 given time unit. | 
| long | ThreadPoolExecutor. getKeepAliveTime(TimeUnit unit)Returns the thread keep-alive time, which is the amount of time
 that threads in excess of the core pool size may remain
 idle before being terminated. | 
| <T> List<Future<T>> | ExecutorService. invokeAll(Collection<? extends Callable<T>> tasks,
         long timeout,
         TimeUnit unit)Executes the given tasks, returning a list of Futures holding
 their status and results
 when all complete or the timeout expires, whichever happens first. | 
| <T> List<Future<T>> | AbstractExecutorService. invokeAll(Collection<? extends Callable<T>> tasks,
         long timeout,
         TimeUnit unit) | 
| <T> T | ExecutorService. invokeAny(Collection<? extends Callable<T>> tasks,
         long timeout,
         TimeUnit unit)Executes the given tasks, returning the result
 of one that has completed successfully (i.e., without throwing
 an exception), if any do before the given timeout elapses. | 
| <T> T | AbstractExecutorService. invokeAny(Collection<? extends Callable<T>> tasks,
         long timeout,
         TimeUnit unit) | 
| boolean | BlockingQueue. offer(E e,
     long timeout,
     TimeUnit unit)Inserts the specified element into this queue, waiting up to the
 specified wait time if necessary for space to become available. | 
| boolean | ArrayBlockingQueue. offer(E e,
     long timeout,
     TimeUnit unit)Inserts the specified element at the tail of this queue, waiting
 up to the specified wait time for space to become available if
 the queue is full. | 
| boolean | BlockingDeque. offer(E e,
     long timeout,
     TimeUnit unit)Inserts the specified element into the queue represented by this deque
 (in other words, at the tail of this deque), waiting up to the
 specified wait time if necessary for space to become available. | 
| boolean | DelayQueue. offer(E e,
     long timeout,
     TimeUnit unit)Inserts the specified element into this delay queue. | 
| boolean | LinkedTransferQueue. offer(E e,
     long timeout,
     TimeUnit unit)Inserts the specified element at the tail of this queue. | 
| boolean | LinkedBlockingDeque. offer(E e,
     long timeout,
     TimeUnit unit) | 
| boolean | SynchronousQueue. offer(E o,
     long timeout,
     TimeUnit unit)Inserts the specified element into this queue, waiting if necessary
 up to the specified wait time for another thread to receive it. | 
| boolean | LinkedBlockingQueue. offer(E e,
     long timeout,
     TimeUnit unit)Inserts the specified element at the tail of this queue, waiting if
 necessary up to the specified wait time for space to become available. | 
| boolean | PriorityBlockingQueue. offer(E e,
     long timeout,
     TimeUnit unit)Inserts the specified element into this priority queue. | 
| boolean | BlockingDeque. offerFirst(E e,
          long timeout,
          TimeUnit unit)Inserts the specified element at the front of this deque,
 waiting up to the specified wait time if necessary for space to
 become available. | 
| boolean | LinkedBlockingDeque. offerFirst(E e,
          long timeout,
          TimeUnit unit) | 
| boolean | BlockingDeque. offerLast(E e,
         long timeout,
         TimeUnit unit)Inserts the specified element at the end of this deque,
 waiting up to the specified wait time if necessary for space to
 become available. | 
| boolean | LinkedBlockingDeque. offerLast(E e,
         long timeout,
         TimeUnit unit) | 
| E | BlockingQueue. poll(long timeout,
    TimeUnit unit)Retrieves and removes the head of this queue, waiting up to the
 specified wait time if necessary for an element to become available. | 
| E | ArrayBlockingQueue. poll(long timeout,
    TimeUnit unit) | 
| E | BlockingDeque. poll(long timeout,
    TimeUnit unit)Retrieves and removes the head of the queue represented by this deque
 (in other words, the first element of this deque), waiting up to the
 specified wait time if necessary for an element to become available. | 
| E | DelayQueue. poll(long timeout,
    TimeUnit unit)Retrieves and removes the head of this queue, waiting if necessary
 until an element with an expired delay is available on this queue,
 or the specified wait time expires. | 
| E | LinkedTransferQueue. poll(long timeout,
    TimeUnit unit) | 
| E | LinkedBlockingDeque. poll(long timeout,
    TimeUnit unit) | 
| Future<V> | ExecutorCompletionService. poll(long timeout,
    TimeUnit unit) | 
| E | SynchronousQueue. poll(long timeout,
    TimeUnit unit)Retrieves and removes the head of this queue, waiting
 if necessary up to the specified wait time, for another thread
 to insert it. | 
| E | LinkedBlockingQueue. poll(long timeout,
    TimeUnit unit) | 
| E | PriorityBlockingQueue. poll(long timeout,
    TimeUnit unit) | 
| Future<V> | CompletionService. poll(long timeout,
    TimeUnit unit)Retrieves and removes the Future representing the next
 completed task, waiting if necessary up to the specified wait
 time if none are yet present. | 
| E | BlockingDeque. pollFirst(long timeout,
         TimeUnit unit)Retrieves and removes the first element of this deque, waiting
 up to the specified wait time if necessary for an element to
 become available. | 
| E | LinkedBlockingDeque. pollFirst(long timeout,
         TimeUnit unit) | 
| E | BlockingDeque. pollLast(long timeout,
        TimeUnit unit)Retrieves and removes the last element of this deque, waiting
 up to the specified wait time if necessary for an element to
 become available. | 
| E | LinkedBlockingDeque. pollLast(long timeout,
        TimeUnit unit) | 
| <V> ScheduledFuture<V> | ScheduledThreadPoolExecutor. schedule(Callable<V> callable,
        long delay,
        TimeUnit unit) | 
| <V> ScheduledFuture<V> | ScheduledExecutorService. schedule(Callable<V> callable,
        long delay,
        TimeUnit unit)Creates and executes a ScheduledFuture that becomes enabled after the
 given delay. | 
| ScheduledFuture<?> | ScheduledThreadPoolExecutor. schedule(Runnable command,
        long delay,
        TimeUnit unit) | 
| ScheduledFuture<?> | ScheduledExecutorService. schedule(Runnable command,
        long delay,
        TimeUnit unit)Creates and executes a one-shot action that becomes enabled
 after the given delay. | 
| ScheduledFuture<?> | ScheduledThreadPoolExecutor. scheduleAtFixedRate(Runnable command,
                   long initialDelay,
                   long period,
                   TimeUnit unit) | 
| ScheduledFuture<?> | ScheduledExecutorService. scheduleAtFixedRate(Runnable command,
                   long initialDelay,
                   long period,
                   TimeUnit unit)Creates and executes a periodic action that becomes enabled first
 after the given initial delay, and subsequently with the given
 period; that is executions will commence after
 initialDelay then initialDelay+period, then
 initialDelay + 2 * period, and so on. | 
| ScheduledFuture<?> | ScheduledThreadPoolExecutor. scheduleWithFixedDelay(Runnable command,
                      long initialDelay,
                      long delay,
                      TimeUnit unit) | 
| ScheduledFuture<?> | ScheduledExecutorService. scheduleWithFixedDelay(Runnable command,
                      long initialDelay,
                      long delay,
                      TimeUnit unit)Creates and executes a periodic action that becomes enabled first
 after the given initial delay, and subsequently with the
 given delay between the termination of one execution and the
 commencement of the next. | 
| void | ThreadPoolExecutor. setKeepAliveTime(long time,
                TimeUnit unit)Sets the time limit for which threads may remain idle before
 being terminated. | 
| boolean | Semaphore. tryAcquire(int permits,
          long timeout,
          TimeUnit unit)Acquires the given number of permits from this semaphore, if all
 become available within the given waiting time and the current
 thread has not been interrupted. | 
| boolean | Semaphore. tryAcquire(long timeout,
          TimeUnit unit)Acquires a permit from this semaphore, if one becomes available
 within the given waiting time and the current thread has not
 been interrupted. | 
| boolean | TransferQueue. tryTransfer(E e,
           long timeout,
           TimeUnit unit)Transfers the element to a consumer if it is possible to do so
 before the timeout elapses. | 
| boolean | LinkedTransferQueue. tryTransfer(E e,
           long timeout,
           TimeUnit unit)Transfers the element to a consumer if it is possible to do so
 before the timeout elapses. | 
| Constructor and Description | 
|---|
| ThreadPoolExecutor(int corePoolSize,
                  int maximumPoolSize,
                  long keepAliveTime,
                  TimeUnit unit,
                  BlockingQueue<Runnable> workQueue)Creates a new  ThreadPoolExecutorwith the given initial
 parameters and default thread factory and rejected execution handler. | 
| ThreadPoolExecutor(int corePoolSize,
                  int maximumPoolSize,
                  long keepAliveTime,
                  TimeUnit unit,
                  BlockingQueue<Runnable> workQueue,
                  RejectedExecutionHandler handler)Creates a new  ThreadPoolExecutorwith the given initial
 parameters and default thread factory. | 
| ThreadPoolExecutor(int corePoolSize,
                  int maximumPoolSize,
                  long keepAliveTime,
                  TimeUnit unit,
                  BlockingQueue<Runnable> workQueue,
                  ThreadFactory threadFactory)Creates a new  ThreadPoolExecutorwith the given initial
 parameters and default rejected execution handler. | 
| ThreadPoolExecutor(int corePoolSize,
                  int maximumPoolSize,
                  long keepAliveTime,
                  TimeUnit unit,
                  BlockingQueue<Runnable> workQueue,
                  ThreadFactory threadFactory,
                  RejectedExecutionHandler handler)Creates a new  ThreadPoolExecutorwith the given initial
 parameters. | 
| Modifier and Type | Method and Description | 
|---|---|
| boolean | Condition. await(long time,
     TimeUnit unit)Causes the current thread to wait until it is signalled or interrupted,
 or the specified waiting time elapses. | 
| boolean | AbstractQueuedLongSynchronizer.ConditionObject. await(long time,
     TimeUnit unit)Implements timed condition wait. | 
| boolean | AbstractQueuedSynchronizer.ConditionObject. await(long time,
     TimeUnit unit)Implements timed condition wait. | 
| boolean | ReentrantLock. tryLock(long timeout,
       TimeUnit unit)Acquires the lock if it is not held by another thread within the given
 waiting time and the current thread has not been
 interrupted. | 
| boolean | ReentrantReadWriteLock.ReadLock. tryLock(long timeout,
       TimeUnit unit)Acquires the read lock if the write lock is not held by
 another thread within the given waiting time and the
 current thread has not been interrupted. | 
| boolean | ReentrantReadWriteLock.WriteLock. tryLock(long timeout,
       TimeUnit unit)Acquires the write lock if it is not held by another thread
 within the given waiting time and the current thread has
 not been interrupted. | 
| boolean | Lock. tryLock(long time,
       TimeUnit unit)Acquires the lock if it is free within the given waiting time and the
 current thread has not been interrupted. | 
| Modifier and Type | Method and Description | 
|---|---|
| T | SwingWorker. get(long timeout,
   TimeUnit unit)Waits if necessary for at most the given time for the computation
 to complete, and then retrieves its result, if available. | 
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