SelectionKey

Class SelectionKey

Direct Known Subclasses:
AbstractSelectionKey
public abstract class SelectionKey
extends Object

A token representing the registration of a SelectableChannel with a Selector.

A selection key is created each time a channel is registered with a selector. A key remains valid until it is cancelled by invoking its cancel method, by closing its channel, or by closing its selector. Cancelling a key does not immediately remove it from its selector; it is instead added to the selector's 登录查看完整内容