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- 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 protected
AbstractSelectionKey()
Initializes a new instance of this class.
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Method Summary
Methods Modifier and Type Method and Description void
cancel()
Cancels this key.boolean
isValid()
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
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AbstractSelectionKey
protected AbstractSelectionKey()
Initializes a new instance of this class.
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Method Detail
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isValid
public final boolean isValid()
Description copied from class:SelectionKey
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.
- Specified by:
isValid
in classSelectionKey
- Returns:
- true if, and only if, this key is valid
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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:
cancel
in classSelectionKey
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