java.nio.channels
接口 
ByteChannel
Channel
GatheringByteChannel
InterruptibleChannel
ReadableByteChannel
ScatteringByteChannel
WritableByteChannel
 
Channels
DatagramChannel
FileChannel
FileChannel.MapMode
FileLock
Pipe
Pipe.SinkChannel
Pipe.SourceChannel
SelectableChannel
SelectionKey
Selector
ServerSocketChannel
SocketChannel
异常 
AlreadyConnectedException
AsynchronousCloseException
CancelledKeyException
ClosedByInterruptException
ClosedChannelException
ClosedSelectorException
ConnectionPendingException
FileLockInterruptionException
IllegalBlockingModeException
IllegalSelectorException
NoConnectionPendingException
NonReadableChannelException
NonWritableChannelException
NotYetBoundException
NotYetConnectedException
OverlappingFileLockException
UnresolvedAddressException
UnsupportedAddressTypeException