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Classes

Summary: Protected Ctors | Methods | Protected Methods | Inherited Methods | [Expand All]

Added in API level 1

public abstract class

AbstractSelector

extends Selector

java.lang.Object
↳	java.nio.channels.Selector
	↳	java.nio.channels.spi.AbstractSelector

Class Overview

AbstractSelector is the base implementation class for selectors. It realizes the interruption of selection by begin and end . It also holds the cancellation and the deletion of the key set.

Summary

Protected Constructors
	AbstractSelector ( SelectorProvider selectorProvider)

Public Methods
final void	close () Closes this selector.
final boolean	isOpen () Returns true if this selector is open.
final SelectorProvider	provider () Returns this selector's provider.

Protected Methods
final void	begin () Indicates the beginning of a code section that includes an I/O operation that is potentially blocking.
final Set < SelectionKey >	cancelledKeys () Returns this channel's set of canceled selection keys.
final void	deregister ( AbstractSelectionKey key) Deletes the key from the channel's key set.
final void	end () Indicates the end of a code section that has been started with `begin()` and that includes a potentially blocking I/O operation.
abstract void	implCloseSelector () Implements the closing of this channel.
abstract SelectionKey	register ( AbstractSelectableChannel channel, int operations, Object attachment) Registers `channel` with this selector.

[Expand]

Inherited Methods

From class java.nio.channels.Selector

abstract void	close () Closes this selector.
abstract boolean	isOpen () Indicates whether this selector is open.
abstract Set < SelectionKey >	keys () Gets the set of registered keys.
static Selector	open () Returns a selector returned by `provider()` 's `openSelector()` method.
abstract SelectorProvider	provider () Gets the provider of this selector.
abstract int	select () Detects if any of the registered channels is ready for I/O operations according to its `interest set` .
abstract int	select (long timeout) Detects if any of the registered channels is ready for I/O operations according to its `interest set` .
abstract int	selectNow () Detects if any of the registered channels is ready for I/O operations according to its `interest set` .
abstract Set < SelectionKey >	selectedKeys () Gets the selection keys whose channels are ready for operation.
abstract Selector	wakeup () Forces blocked `select` operations to return immediately.

From class java.lang.Object

Object	clone () Creates and returns a copy of this `Object` .
boolean	equals ( Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize () Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class <?>	getClass () Returns the unique instance of `Class` that represents this object's class.
int	hashCode () Returns an integer hash code for this object.
final void	notify () Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll () Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString () Returns a string containing a concise, human-readable description of this object.
final void	wait () Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait (long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait (long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

From interface java.io.Closeable

From interface java.lang.AutoCloseable

Protected Constructors

protected AbstractSelector ( SelectorProvider selectorProvider)

Added in API level 1

Public Methods

public final void close ()

Added in API level 1

Closes this selector. This method does nothing if this selector is already closed. The actual closing must be implemented by subclasses in implCloseSelector() .

Throws

IOException

public final boolean isOpen ()

Added in API level 1

Returns true if this selector is open.

Returns

true if this selector is not closed, false otherwise.

public final SelectorProvider provider ()

Added in API level 1

Returns this selector's provider.

Returns

the provider of this selector.

Protected Methods

protected final void begin ()

Added in API level 1

Indicates the beginning of a code section that includes an I/O operation that is potentially blocking. After this operation, the application should invoke the corresponding end(boolean) method.

protected final Set < SelectionKey > cancelledKeys ()

Added in API level 1

Returns this channel's set of canceled selection keys.

protected final void deregister ( AbstractSelectionKey key)

Added in API level 1

Deletes the key from the channel's key set.

protected final void end ()

Added in API level 1

Indicates the end of a code section that has been started with begin() and that includes a potentially blocking I/O operation.

protected abstract void implCloseSelector ()

Added in API level 1

Implements the closing of this channel.

Throws

IOException

protected abstract SelectionKey register ( AbstractSelectableChannel channel, int operations, Object attachment)

Added in API level 1

Registers channel with this selector.

Parameters

operations	the `interest set` of `channel` .
attachment	the attachment for the selection key.

Returns

the key related to the channel and this selector.

Results

Classes

AbstractSelector

Class Overview

Summary

Protected Constructors

protected AbstractSelector ( SelectorProvider selectorProvider)

Public Methods

public final void close ()

Throws

public final boolean isOpen ()

Returns

public final SelectorProvider provider ()

Returns

Protected Methods

protected final void begin ()

protected final Set < SelectionKey > cancelledKeys ()

protected final void deregister ( AbstractSelectionKey key)

protected final void end ()

protected abstract void implCloseSelector ()

Throws

protected abstract SelectionKey register ( AbstractSelectableChannel channel, int operations, Object attachment)

Parameters

Returns