Class AbstractSelectionKey
- java.lang.Object
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- java.nio.channels.SelectionKey
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- java.nio.channels.spi.AbstractSelectionKey
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public abstract class AbstractSelectionKey extends SelectionKey
Base implementation class for selection keys.This class tracks the validity of the key and implements cancellation.
- Since:
- 1.4
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Field Summary
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Fields inherited from class java.nio.channels.SelectionKey
OP_ACCEPT, OP_CONNECT, OP_READ, OP_WRITE
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Constructor Summary
Constructors Modifier Constructor and Description protectedAbstractSelectionKey()Initializes a new instance of this class.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description voidcancel()Cancels this key.booleanisValid()Tells whether or not this key is valid.-
Methods inherited from class java.nio.channels.SelectionKey
attach, attachment, channel, interestOps, interestOps, isAcceptable, isConnectable, isReadable, isWritable, readyOps, selector
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Constructor Detail
AbstractSelectionKey
protected AbstractSelectionKey()
Initializes a new instance of this class.
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Method Detail
isValid
public final boolean isValid()
Description copied from class:SelectionKeyTells 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.
- Specified by:
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isValidin classSelectionKey - Returns:
- true if, and only if, this key is valid
cancel
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.
- Specified by:
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cancelin classSelectionKey
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