Package java.nio.channels.spi

Class AbstractSelectionKey

java.lang.Object

java.nio.channels.SelectionKey

java.nio.channels.spi.AbstractSelectionKey

public abstract class AbstractSelectionKey
extends SelectionKey

AbstractSelectionKey is the base implementation class for selection keys. It implements validation and cancellation methods.

Field Summary

Fields inherited from class java.nio.channels.SelectionKey

OP_ACCEPT, OP_CONNECT, OP_READ, OP_WRITE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractSelectionKey()	Constructs a new AbstractSelectionKey.

Method Summary

Modifier and Type	Method	Description
void	cancel()	Cancels this key.
boolean	isValid()	Indicates whether this key is valid.

Methods inherited from class java.nio.channels.SelectionKey

attach, attachment, channel, interestOps, interestOps, isAcceptable, isConnectable, isReadable, isWritable, readyOps, selector

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AbstractSelectionKey

protected AbstractSelectionKey()

Constructs a new AbstractSelectionKey.

Method Details

isValid

public final boolean isValid()

Indicates whether this key is valid. A key is valid as long as it has not been canceled.

Specified by:

isValid in class SelectionKey

Returns:

true if this key has not been canceled, false otherwise.

cancel

public final void cancel()

Cancels this key.

A key that has been canceled is no longer valid. Calling this method on an already canceled key does nothing.

Specified by:

cancel in class SelectionKey