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
register method is in progress
then it will first block until the other operation is complete.
|If true then this channel will be placed in blocking mode; if false then it will be placed non-blocking mode|
|If this channel is closed|
|If block is true and this channel is registered with one or more selectors|
|If an I/O error occurs|