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java.nio.channels
Class SelectionKey
java.lang.Objectjava.nio.channels.SelectionKey
- public abstract class SelectionKey
- extends java.lang.Object
- Since:
- 1.4
| Field Summary | |
(package private) java.lang.Object |
attached
|
static int |
OP_ACCEPT
|
static int |
OP_CONNECT
|
static int |
OP_READ
|
static int |
OP_WRITE
|
| Constructor Summary | |
protected |
SelectionKey()
Initializes the selection key. |
| Method Summary | |
java.lang.Object |
attach(java.lang.Object obj)
Attaches obj to the key and returns the old attached object. |
java.lang.Object |
attachment()
Returns the object attached to the key. |
abstract void |
cancel()
Requests that the registration of this key's channel with its selector be cancelled. |
abstract SelectableChannel |
channel()
return the channel attached to the key. |
abstract int |
interestOps()
Returns the key's interest set. |
abstract SelectionKey |
interestOps(int ops)
Sets this key's interest set to the given value. |
boolean |
isAcceptable()
Tests if the channel attached to this key is ready to accept a new socket connection. |
boolean |
isConnectable()
Tests whether this key's channel has either finished, or failed to finish, its socket-connection operation. |
boolean |
isReadable()
Tests if the channel attached to the key is readable. |
abstract boolean |
isValid()
Tells whether or not this key is valid. |
boolean |
isWritable()
Tests if the channel attached to the key is writable. |
abstract int |
readyOps()
Retrieves this key's ready-operation set. |
abstract Selector |
selector()
Returns the selector for which this key was created. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
OP_ACCEPT
public static final int OP_ACCEPT
- See Also:
- Constant Field Values
OP_CONNECT
public static final int OP_CONNECT
- See Also:
- Constant Field Values
OP_READ
public static final int OP_READ
- See Also:
- Constant Field Values
OP_WRITE
public static final int OP_WRITE
- See Also:
- Constant Field Values
attached
java.lang.Object attached
| Constructor Detail |
SelectionKey
protected SelectionKey()
- Initializes the selection key.
| Method Detail |
attach
public final java.lang.Object attach(java.lang.Object obj)
- Attaches obj to the key and returns the old attached object.
attachment
public final java.lang.Object attachment()
- Returns the object attached to the key.
isAcceptable
public final boolean isAcceptable()
- Tests if the channel attached to this key is ready to accept
a new socket connection.
isConnectable
public final boolean isConnectable()
- Tests whether this key's channel has either finished,
or failed to finish, its socket-connection operation.
isReadable
public final boolean isReadable()
- Tests if the channel attached to the key is readable.
isWritable
public final boolean isWritable()
- Tests if the channel attached to the key is writable.
cancel
public abstract void cancel()
- Requests that the registration of this key's channel with
its selector be cancelled.
channel
public abstract SelectableChannel channel()
- return the channel attached to the key.
interestOps
public abstract int interestOps()
- Returns the key's interest set.
interestOps
public abstract SelectionKey interestOps(int ops)
- Sets this key's interest set to the given value.
isValid
public abstract boolean isValid()
- Tells whether or not this key is valid.
readyOps
public abstract int readyOps()
- Retrieves this key's ready-operation set.
selector
public abstract Selector selector()
- Returns the selector for which this key was created.
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