| Package | Description | 
|---|---|
| java.awt | Contains all of the classes for creating user
interfaces and for painting graphics and images. | 
| java.awt.image | Provides classes for creating and modifying images. | 
| java.lang | Provides classes that are fundamental to the design of the Java
 programming language. | 
| java.lang.ref | Provides reference-object classes, which support a limited degree of
interaction with the garbage collector. | 
| 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.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 | 
|---|---|
| AWTEvent | EventQueue. getNextEvent()Removes an event from the  EventQueueand
 returns it. | 
| static void | EventQueue. invokeAndWait(Runnable runnable) | 
| void | MediaTracker. waitForAll()Starts loading all images tracked by this media tracker. | 
| boolean | MediaTracker. waitForAll(long ms)Starts loading all images tracked by this media tracker. | 
| void | MediaTracker. waitForID(int id)Starts loading all images tracked by this media tracker with the
 specified identifier. | 
| boolean | MediaTracker. waitForID(int id,
         long ms)Starts loading all images tracked by this media tracker with the
 specified identifier. | 
| Modifier and Type | Method and Description | 
|---|---|
| boolean | PixelGrabber. grabPixels()Request the Image or ImageProducer to start delivering pixels and
 wait for all of the pixels in the rectangle of interest to be
 delivered. | 
| boolean | PixelGrabber. grabPixels(long ms)Request the Image or ImageProducer to start delivering pixels and
 wait for all of the pixels in the rectangle of interest to be
 delivered or until the specified timeout has elapsed. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | Thread. join()Waits for this thread to die. | 
| void | Thread. join(long millis)Waits at most  millismilliseconds for this thread to
 die. | 
| void | Thread. join(long millis,
    int nanos)Waits at most  millismilliseconds plusnanosnanoseconds for this thread to die. | 
| static void | Thread. sleep(long millis)Causes the currently executing thread to sleep (temporarily cease
 execution) for the specified number of milliseconds, subject to
 the precision and accuracy of system timers and schedulers. | 
| static void | Thread. sleep(long millis,
     int nanos)Causes the currently executing thread to sleep (temporarily cease
 execution) for the specified number of milliseconds plus the specified
 number of nanoseconds, subject to the precision and accuracy of system
 timers and schedulers. | 
| void | Object. wait()Causes the current thread to wait until another thread invokes the
  Object.notify()method or theObject.notifyAll()method for this object. | 
| void | Object. wait(long timeout)Causes the current thread to wait until either another thread invokes the
  Object.notify()method or theObject.notifyAll()method for this object, or a
 specified amount of time has elapsed. | 
| void | Object. wait(long timeout,
    int nanos)Causes the current thread to wait until another thread invokes the
  Object.notify()method or theObject.notifyAll()method for this object, or
 some other thread interrupts the current thread, or a certain
 amount of real time has elapsed. | 
| abstract int | Process. waitFor()Causes the current thread to wait, if necessary, until the
 process represented by this  Processobject has
 terminated. | 
| boolean | Process. waitFor(long timeout,
       TimeUnit unit)Causes the current thread to wait, if necessary, until the
 subprocess represented by this  Processobject has
 terminated, or the specified waiting time elapses. | 
| Modifier and Type | Method and Description | 
|---|---|
| Reference<? extends T> | ReferenceQueue. remove()Removes the next reference object in this queue, blocking until one
 becomes available. | 
| Reference<? extends T> | ReferenceQueue. remove(long timeout)Removes the next reference object in this queue, blocking until either
 one becomes available or the given timeout period expires. | 
| Modifier and Type | Method and Description | 
|---|---|
| abstract boolean | AsynchronousChannelGroup. awaitTermination(long timeout,
                TimeUnit unit)Awaits termination of the group. | 
| 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. | 
| WatchKey | WatchService. take()Retrieves and removes next watch key, waiting if none are yet present. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | Semaphore. acquire()Acquires a permit from this semaphore, blocking until one is
 available, or the thread is interrupted. | 
| void | Semaphore. acquire(int permits)Acquires the given number of permits from this semaphore,
 blocking until all are available,
 or the thread is interrupted. | 
| int | CyclicBarrier. await()Waits until all parties have invoked
  awaiton this barrier. | 
| void | CountDownLatch. await()Causes the current thread to wait until the latch has counted down to
 zero, unless the thread is interrupted. | 
| int | CyclicBarrier. await(long timeout,
     TimeUnit unit)Waits until all parties have invoked
  awaiton this barrier, or the specified waiting time elapses. | 
| 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 | Phaser. awaitAdvanceInterruptibly(int phase)Awaits the phase of this phaser to advance from the given phase
 value, 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. | 
| 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 | 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. | 
| 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.ManagedBlocker. block()Possibly blocks the current thread, for example waiting for
 a lock or condition. | 
| V | Exchanger. exchange(V x)Waits for another thread to arrive at this exchange point (unless
 the current thread is interrupted),
 and then transfers the given object to it, receiving its object
 in return. | 
| 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()Waits if necessary for the computation to complete, and then
 retrieves its result. | 
| T | CompletableFuture. get()Waits if necessary for this future to complete, and then
 returns its result. | 
| V | Future. get()Waits if necessary for the computation to complete, and then
 retrieves its result. | 
| V | FutureTask. get() | 
| 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. | 
| T | CompletableFuture. get(long timeout,
   TimeUnit unit)Waits if necessary for at most the given time for this future
 to complete, and then returns its result, if available. | 
| 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. | 
| V | FutureTask. get(long timeout,
   TimeUnit unit) | 
| <T> List<Future<T>> | AbstractExecutorService. invokeAll(Collection<? extends Callable<T>> tasks) | 
| <T> List<Future<T>> | ExecutorService. invokeAll(Collection<? extends Callable<T>> tasks)Executes the given tasks, returning a list of Futures holding
 their status and results when all complete. | 
| <T> List<Future<T>> | AbstractExecutorService. invokeAll(Collection<? extends Callable<T>> tasks,
         long timeout,
         TimeUnit unit) | 
| <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> T | AbstractExecutorService. invokeAny(Collection<? extends Callable<T>> tasks) | 
| <T> T | ExecutorService. invokeAny(Collection<? extends Callable<T>> tasks)Executes the given tasks, returning the result
 of one that has completed successfully (i.e., without throwing
 an exception), if any do. | 
| <T> T | AbstractExecutorService. invokeAny(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. | 
| static void | ForkJoinPool. managedBlock(ForkJoinPool.ManagedBlocker blocker)Runs the given possibly blocking task. | 
| boolean | LinkedBlockingDeque. offer(E e,
     long timeout,
     TimeUnit unit) | 
| boolean | SynchronousQueue. offer(E e,
     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 | 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 | 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 | LinkedBlockingDeque. offerFirst(E e,
          long timeout,
          TimeUnit unit) | 
| 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. offerLast(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. | 
| E | LinkedBlockingDeque. 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 | 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 | PriorityBlockingQueue. poll(long timeout,
    TimeUnit unit) | 
| Future<V> | ExecutorCompletionService. poll(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) | 
| 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 | 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. pollFirst(long timeout,
         TimeUnit unit) | 
| 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. pollLast(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. | 
| void | LinkedBlockingDeque. put(E e) | 
| void | SynchronousQueue. put(E e)Adds the specified element to this queue, waiting if necessary for
 another thread to receive it. | 
| void | LinkedBlockingQueue. put(E e)Inserts the specified element at the tail of this queue, waiting if
 necessary for space to become available. | 
| void | BlockingDeque. put(E e)Inserts the specified element into the queue represented by this deque
 (in other words, at the tail of this deque), waiting if necessary for
 space to become available. | 
| void | BlockingQueue. put(E e)Inserts the specified element into this queue, waiting if necessary
 for space to become available. | 
| void | ArrayBlockingQueue. put(E e)Inserts the specified element at the tail of this queue, waiting
 for space to become available if the queue is full. | 
| void | LinkedBlockingDeque. putFirst(E e) | 
| void | BlockingDeque. putFirst(E e)Inserts the specified element at the front of this deque,
 waiting if necessary for space to become available. | 
| void | LinkedBlockingDeque. putLast(E e) | 
| void | BlockingDeque. putLast(E e)Inserts the specified element at the end of this deque,
 waiting if necessary for space to become available. | 
| void | TimeUnit. sleep(long timeout)Performs a  Thread.sleepusing
 this time unit. | 
| E | LinkedBlockingDeque. take() | 
| E | SynchronousQueue. take()Retrieves and removes the head of this queue, waiting if necessary
 for another thread to insert it. | 
| E | LinkedBlockingQueue. take() | 
| E | BlockingDeque. take()Retrieves and removes the head of the queue represented by this deque
 (in other words, the first element of this deque), waiting if
 necessary until an element becomes available. | 
| E | PriorityBlockingQueue. take() | 
| Future<V> | ExecutorCompletionService. take() | 
| E | BlockingQueue. take()Retrieves and removes the head of this queue, waiting if necessary
 until an element becomes available. | 
| E | ArrayBlockingQueue. take() | 
| Future<V> | CompletionService. take()Retrieves and removes the Future representing the next
 completed task, waiting if none are yet present. | 
| E | DelayQueue. take()Retrieves and removes the head of this queue, waiting if necessary
 until an element with an expired delay is available on this queue. | 
| E | LinkedTransferQueue. take() | 
| E | LinkedBlockingDeque. takeFirst() | 
| E | BlockingDeque. takeFirst()Retrieves and removes the first element of this deque, waiting
 if necessary until an element becomes available. | 
| E | LinkedBlockingDeque. takeLast() | 
| E | BlockingDeque. takeLast()Retrieves and removes the last element of this deque, waiting
 if necessary until an element becomes available. | 
| void | TimeUnit. timedJoin(Thread thread,
         long timeout)Performs a timed  Thread.joinusing this time unit. | 
| void | TimeUnit. timedWait(Object obj,
         long timeout)Performs a timed  Object.waitusing this time unit. | 
| void | TransferQueue. transfer(E e)Transfers the element to a consumer, waiting if necessary to do so. | 
| void | LinkedTransferQueue. transfer(E e)Transfers the element to a consumer, waiting if necessary to do so. | 
| 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. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | AbstractQueuedSynchronizer. acquireInterruptibly(int arg)Acquires in exclusive mode, aborting if interrupted. | 
| void | AbstractQueuedLongSynchronizer. acquireInterruptibly(long arg)Acquires in exclusive mode, aborting if interrupted. | 
| void | AbstractQueuedSynchronizer. acquireSharedInterruptibly(int arg)Acquires in shared mode, aborting if interrupted. | 
| void | AbstractQueuedLongSynchronizer. acquireSharedInterruptibly(long arg)Acquires in shared mode, aborting if interrupted. | 
| void | Condition. await()Causes the current thread to wait until it is signalled or
 interrupted. | 
| void | AbstractQueuedLongSynchronizer.ConditionObject. await()Implements interruptible condition wait. | 
| void | AbstractQueuedSynchronizer.ConditionObject. await()Implements interruptible condition wait. | 
| 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. | 
| long | Condition. awaitNanos(long nanosTimeout)Causes the current thread to wait until it is signalled or interrupted,
 or the specified waiting time elapses. | 
| long | AbstractQueuedLongSynchronizer.ConditionObject. awaitNanos(long nanosTimeout)Implements timed condition wait. | 
| long | AbstractQueuedSynchronizer.ConditionObject. awaitNanos(long nanosTimeout)Implements timed condition wait. | 
| boolean | Condition. awaitUntil(Date deadline)Causes the current thread to wait until it is signalled or interrupted,
 or the specified deadline elapses. | 
| boolean | AbstractQueuedLongSynchronizer.ConditionObject. awaitUntil(Date deadline)Implements absolute timed condition wait. | 
| boolean | AbstractQueuedSynchronizer.ConditionObject. awaitUntil(Date deadline)Implements absolute timed condition wait. | 
| void | ReentrantLock. lockInterruptibly()Acquires the lock unless the current thread is
 interrupted. | 
| void | ReentrantReadWriteLock.ReadLock. lockInterruptibly()Acquires the read lock unless the current thread is
 interrupted. | 
| void | ReentrantReadWriteLock.WriteLock. lockInterruptibly()Acquires the write lock unless the current thread is
 interrupted. | 
| void | Lock. lockInterruptibly()Acquires the lock unless the current thread is
 interrupted. | 
| long | StampedLock. readLockInterruptibly()Non-exclusively acquires the lock, blocking if necessary
 until available or the current thread is interrupted. | 
| boolean | AbstractQueuedSynchronizer. tryAcquireNanos(int arg,
               long nanosTimeout)Attempts to acquire in exclusive mode, aborting if interrupted,
 and failing if the given timeout elapses. | 
| boolean | AbstractQueuedLongSynchronizer. tryAcquireNanos(long arg,
               long nanosTimeout)Attempts to acquire in exclusive mode, aborting if interrupted,
 and failing if the given timeout elapses. | 
| boolean | AbstractQueuedSynchronizer. tryAcquireSharedNanos(int arg,
                     long nanosTimeout)Attempts to acquire in shared mode, aborting if interrupted, and
 failing if the given timeout elapses. | 
| boolean | AbstractQueuedLongSynchronizer. tryAcquireSharedNanos(long arg,
                     long nanosTimeout)Attempts to acquire in shared mode, aborting if interrupted, and
 failing if the given timeout elapses. | 
| 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. | 
| long | StampedLock. tryReadLock(long time,
           TimeUnit unit)Non-exclusively acquires the lock if it is available within the
 given time and the current thread has not been interrupted. | 
| long | StampedLock. tryWriteLock(long time,
            TimeUnit unit)Exclusively acquires the lock if it is available within the
 given time and the current thread has not been interrupted. | 
| long | StampedLock. writeLockInterruptibly()Exclusively acquires the lock, blocking if necessary
 until available or the current thread is interrupted. | 
| Modifier and Type | Method and Description | 
|---|---|
| T | SwingWorker. get()Waits if necessary for the computation to complete, and then
 retrieves its result. | 
| 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. | 
| static void | SwingUtilities. invokeAndWait(Runnable doRun)Causes  doRun.run()to be executed synchronously on the
 AWT event dispatching thread. | 
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