AbstractSelectionKey

public abstract class AbstractSelectionKey extends SelectionKey

Base implementation class for selection keys.

This class tracks the validity of the key and implements cancellation.

Inherited Constant Summary

Protected Constructor Summary

AbstractSelectionKey()
Initializes a new instance of this class.

Public Method Summary

final void
cancel()
Cancels this key.
final boolean
isValid()
Tells whether or not this key is valid.

Inherited Method Summary

Protected Constructors

protected AbstractSelectionKey ()

Initializes a new instance of this class.

Public Methods

public final void cancel ()

Cancels this key.

If this key has not yet been cancelled then it is added to its selector's cancelled-key set while synchronized on that set.

public final boolean isValid ()

Tells whether or not this key is valid.

A key is valid upon creation and remains so until it is cancelled, its channel is closed, or its selector is closed.

Returns
  • true if, and only if, this key is valid