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Showing content from https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/nio/channels/NetworkChannel.html below:

NetworkChannel (Java SE 16 & JDK 16)

All Superinterfaces:

AutoCloseable, Channel, Closeable

All Known Subinterfaces:

MulticastChannel

All Known Implementing Classes:

AsynchronousServerSocketChannel, AsynchronousSocketChannel, DatagramChannel, ServerSocketChannel, SocketChannel

A channel to a network socket.

A channel that implements this interface is a channel to a network socket. The bind method is used to bind the socket to a local address, the getLocalAddress method returns the address that the socket is bound to, and the setOption and getOption methods are used to set and query socket options. An implementation of this interface should specify the socket options that it supports.

The bind and setOption methods that do not otherwise have a value to return are specified to return the network channel upon which they are invoked. This allows method invocations to be chained. Implementations of this interface should specialize the return type so that method invocations on the implementation class can be chained.

Since:

1.7

• Method Summary

  Binds the channel's socket to a local address.

  Returns the socket address that this channel's socket is bound to.

  <T> T

  Returns the value of a socket option.

  Sets the value of a socket option.

  Returns a set of the socket options supported by this channel.

• Method Details
  • bind

    This method is used to establish an association between the socket and a local address. Once an association is established then the socket remains bound until the channel is closed. If the local parameter has the value null then the socket will be bound to an address that is assigned automatically.

    Parameters:

    local - The address to bind the socket, or null to bind the socket to an automatically assigned socket address

    Returns:

    This channel

    Throws:

    AlreadyBoundException - If the socket is already bound

    UnsupportedAddressTypeException - If the type of the given address is not supported

    ClosedChannelException - If the channel is closed

    IOException - If some other I/O error occurs

    SecurityException - If a security manager is installed and it denies an unspecified permission. An implementation of this interface should specify any required permissions.

    See Also:

    getLocalAddress()

  • getLocalAddress

    Where the channel is bound to an Internet Protocol socket address then the return value from this method is of type InetSocketAddress.

    Returns:

    The socket address that the socket is bound to, or null if the channel's socket is not bound

    Throws:

    ClosedChannelException - If the channel is closed

    IOException - If an I/O error occurs

  • setOption

    Sets the value of a socket option.

    Type Parameters:

    T - The type of the socket option value

    Parameters:

    name - The socket option

    value - The value of the socket option. A value of null may be a valid value for some socket options.

    Returns:

    This channel

    Throws:

    UnsupportedOperationException - If the socket option is not supported by this channel

    IllegalArgumentException - If the value is not a valid value for this socket option

    ClosedChannelException - If this channel is closed

    IOException - If an I/O error occurs

    See Also:

    StandardSocketOptions

  • getOption

    Returns the value of a socket option.

    Type Parameters:

    T - The type of the socket option value

    Parameters:

    name - The socket option

    Returns:

    The value of the socket option. A value of null may be a valid value for some socket options.

    Throws:

    UnsupportedOperationException - If the socket option is not supported by this channel

    ClosedChannelException - If this channel is closed

    IOException - If an I/O error occurs

    See Also:

    StandardSocketOptions

  • supportedOptions

    This method will continue to return the set of options even after the channel has been closed.

    Returns:

    A set of the socket options supported by this channel

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