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спецификации, руководства, описания, API
java.nio.channels
Interfaces 
AsynchronousByteChannel
AsynchronousChannel
ByteChannel
Channel
CompletionHandler
GatheringByteChannel
InterruptibleChannel
MulticastChannel
NetworkChannel
ReadableByteChannel
ScatteringByteChannel
SeekableByteChannel
WritableByteChannel
Classes 
AsynchronousChannelGroup
AsynchronousFileChannel
AsynchronousServerSocketChannel
AsynchronousSocketChannel
Channels
DatagramChannel
FileChannel
FileChannel.MapMode
FileLock
MembershipKey
Pipe
Pipe.SinkChannel
Pipe.SourceChannel
SelectableChannel
SelectionKey
Selector
ServerSocketChannel
SocketChannel
Exceptions 
AcceptPendingException
AlreadyBoundException
AlreadyConnectedException
AsynchronousCloseException
CancelledKeyException
ClosedByInterruptException
ClosedChannelException
ClosedSelectorException
ConnectionPendingException
FileLockInterruptionException
IllegalBlockingModeException
IllegalChannelGroupException
IllegalSelectorException
InterruptedByTimeoutException
NoConnectionPendingException
NonReadableChannelException
NonWritableChannelException
NotYetBoundException
NotYetConnectedException
OverlappingFileLockException
ReadPendingException
ShutdownChannelGroupException
UnresolvedAddressException
UnsupportedAddressTypeException
WritePendingException