| ByteChannel | A ByteChannel is both readable and writable. | 
| Channel | A channel is a conduit to I/O services covering such items as files, sockets, hardware devices, I/O ports or some software component. | 
| GatheringByteChannel | The interface for channels that can write a set of buffers in a single operation. | 
| InterruptibleChannel | Channels that implement this interface can be asynchronously closed and interrupted. | 
| ReadableByteChannel | 
          A ReadableByteChannel is a type of Channel that can read
 bytes. 
          
    
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| ScatteringByteChannel | The interface for channels that can read data into a set of buffers in a single operation. | 
| WritableByteChannel | 
          A WritableByteChannel is a type of Channel that can write
 bytes. 
          
    
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| Channels | This class provides several utilities to get I/O streams from channels. | 
| DatagramChannel | 
          A DatagramChannel is a selectable channel that represents a partial
 abstraction of a datagram socket. 
          
    
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| FileChannel | An abstract channel type for interaction with a platform file. | 
| FileChannel.MapMode | 
          MapMode defines file mapping mode constants. 
          
    
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| FileLock | 
          A FileLock represents a locked region of a file. 
          
    
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| Pipe | A pipe contains two channels, forming a unidirectional pipe. | 
| Pipe.SinkChannel | Writable sink channel used to write to a pipe. | 
| Pipe.SourceChannel | Readable source channel used to read from a pipe. | 
| SelectableChannel | 
          A channel that can be used with a Selector. 
          
    
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| SelectionKey | 
          A SelectionKey represents the relationship between a channel and a
 selector for which the channel is registered. 
          
    
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| Selector | 
          A controller for the selection of SelectableChannel objects. 
          
    
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| ServerSocketChannel | 
          A ServerSocketChannel is a partial abstraction of a selectable,
 stream-oriented listening socket. 
          
    
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| SocketChannel | 
          A SocketChannel is a selectable channel that provides a partial
 abstraction of stream connecting socket. 
          
    
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| AlreadyConnectedException | 
          An AlreadyConnectedException is thrown when an attempt is made to
 connect a SocketChannel that is already connected. 
          
    
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| AsynchronousCloseException | 
          An AsynchronousCloseException is thrown when the underlying channel
 for an I/O operation is closed by another thread. 
          
    
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| CancelledKeyException | 
          A CancelledKeyException is thrown when an invalid selection key is
 used. 
          
    
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| ClosedByInterruptException | 
          A ClosedByInterruptException is thrown when a thread is interrupted
 in a blocking I/O operation. 
          
    
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| ClosedChannelException | 
          A ClosedChannelException is thrown when a channel is closed for the
 type of operation attempted. 
          
    
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| ClosedSelectorException | 
          A ClosedSelectorException is thrown when a selector
 is closed and an I/O operation is attempted. 
          
    
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| ConnectionPendingException | 
          A ConnectionPendingException is thrown when an attempt is made to
 connect a SocketChannel that has a non-blocking connection already
 underway. 
          
    
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| FileLockInterruptionException | 
          A FileLockInterruptionException is thrown when a thread is
 interrupted while waiting to acquire a file lock. 
          
    
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| IllegalBlockingModeException | 
          An IllegalBlockingModeException is thrown when an operation that
 requires a specific blocking mode is invoked on a channel that is in a
 different blocking mode. 
          
    
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| IllegalSelectorException | 
          An IllegalSelectorException is thrown when a call is made to register
 a channel on a selector that has been created by a different provider. 
          
    
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| NoConnectionPendingException | 
          A NoConnectionPendingException is thrown if SocketChannel's
 finishConnect method is called before
 the SocketChannel's connect(java.net.SocketAddress) connect} method completed
 without error. 
          
    
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| NonReadableChannelException | 
          A NonReadableChannelException is thrown when attempting to read from
 a channel that is not open for reading. 
          
    
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| NonWritableChannelException | 
          A NonWritableChannelException is thrown when attempting to write to a
 channel that is not open for writing. 
          
    
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| NotYetBoundException | 
          A NotYetBoundException is thrown if the server socket channel is not
 bound before an I/O operation is made. 
          
    
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| NotYetConnectedException | 
          A NotYetConnectedException is thrown if the socket channel is not
 connected before an I/O operation is invoked. 
          
    
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| OverlappingFileLockException | 
          An OverlappingFileLockException is thrown when attempting to acquire
 a lock that overlaps an existing or pending lock held by this process. 
          
    
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| UnresolvedAddressException | 
          An UnresolvedAddressException is thrown when trying to use an
 unresolved network address in a network operation. 
          
    
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| UnsupportedAddressTypeException | 
          An UnsupportedAddressTypeException is thrown when connecting or
 binding to an unsupported address type. 
          
    
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