public abstract SelectableChannel configureBlocking (boolean block) throws IOException

Adjusts this channel's blocking mode.

If this channel is registered with one or more selectors then an attempt to place it into blocking mode will cause an IllegalBlockingModeException to be thrown.

This method may be invoked at any time. The new blocking mode will only affect I/O operations that are initiated after this method returns. For some implementations this may require blocking until all pending I/O operations are complete.

If this method is invoked while another invocation of this method or of the register method is in progress then it will first block until the other operation is complete.

block    If true then this channel will be placed in blocking mode; if false then it will be placed non-blocking mode

Returns:  This selectable channel

ClosedChannelException     If this channel is closed
IllegalBlockingModeException     If block is true and this channel is registered with one or more selectors
IOException     If an I/O error occurs