Registers this channel with the given selector, returning a selection key.

An invocation of this convenience method of the form

sc.register(sel, ops)

behaves in exactly the same way as the invocation

sc.register(java.nio.channels.Selector,int,java.lang.Object)(sel, ops, null)

Parameters:

sel The selector with which this channel is to be registered

ops The interest set for the resulting key

Returns: A key representing the registration of this channel with the given selector

Exceptions:

ClosedChannelException     If this channel is closed

ClosedSelectorException     If the selector is closed

IllegalBlockingModeException     If this channel is in blocking mode

IllegalSelectorException     If this channel was not created by the same provider as the given selector

CancelledKeyException     If this channel is currently registered with the given selector but the corresponding key has already been cancelled

IllegalArgumentException     If a bit in ops does not correspond to an operation that is supported by this channel, that is, if set & ~validOps() != 0

`sel`		The selector with which this channel is to be registered
`ops`		The interest set for the resulting key

`ClosedChannelException`		If this channel is closed
`ClosedSelectorException`		If the selector is closed
`IllegalBlockingModeException`		If this channel is in blocking mode
`IllegalSelectorException`		If this channel was not created by the same provider as the given selector
`CancelledKeyException`		If this channel is currently registered with the given selector but the corresponding key has already been cancelled
`IllegalArgumentException`		If a bit in `ops` does not correspond to an operation that is supported by this channel, that is, if `set & ~validOps() != 0`