## Uses of Class
java.nio.channels.Selector

Packages that use Selector
java.nio.channels: Defines channels, which represent connections to entities that are capable of performing I/O operations, such as files and sockets; defines selectors, for multiplexed, non-blocking I/O operations.
java.nio.channels.spi: Service-provider classes for the `java.nio.channels` package.

### Uses of Selector in java.nio.channels

Methods in java.nio.channels that return Selector
`static Selector` Selector.`open()` Opens a selector.
`abstract Selector` SelectionKey.`selector()` Returns the selector for which this key was created.
`abstract Selector` Selector.`wakeup()` Causes the first selection operation that has not yet returned to return immediately.

Methods in java.nio.channels with parameters of type Selector
`abstract SelectionKey` SelectableChannel.`keyFor(Selector sel)` Retrieves the key representing the channel's registration with the given selector.
`SelectionKey` SelectableChannel.`register(Selector sel, int ops)` Registers this channel with the given selector, returning a selection key.
`abstract SelectionKey` SelectableChannel.`register(Selector sel, int ops, Object att)` Registers this channel with the given selector, returning a selection key.

### Uses of Selector in java.nio.channels.spi

Subclasses of Selector in java.nio.channels.spi
`class` `AbstractSelector` Base implementation class for selectors.

Methods in java.nio.channels.spi with parameters of type Selector
`SelectionKey` AbstractSelectableChannel.`keyFor(Selector sel)`
`SelectionKey` AbstractSelectableChannel.`register(Selector sel, int ops, Object att)` Registers this channel with the given selector, returning a selection key.