File	Doc	Category	Size	Date	Package
SelectionKey.java	API Doc	Android 1.5 API	8447	Wed May 06 22:41:04 BST 2009	java.nio.channels

SelectionKey

• java.lang.Object

Fields Summary
public static final int	OP_ACCEPT Interest set mask bit for socket-accept operations.
public static final int	OP_CONNECT Interest set mask bit for socket-connect operations.
public static final int	OP_READ Interesting operation mask bit for read operations.
public static final int	OP_WRITE Interest set mask bit for write operations.
private volatile Object	attachment

Constructors Summary
protected SelectionKey() Constructs a new {@code SelectionKey}. since Android 1.0 super();

Methods Summary
public final java.lang.Object	attach(java.lang.Object anObject) Attaches an object to this key. It is acceptable to attach {@code null}, this discards the old attachment. param anObject the object to attach, or {@code null} to discard the current attachment. return the last attached object or {@code null} if no object has been attached. since Android 1.0 Object oldAttachment = attachment; attachment = anObject; return oldAttachment;
public final java.lang.Object	attachment() Gets the attached object. return the attached object or {@code null} if no object has been attached. since Android 1.0 return attachment;
public abstract 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 A key that has been canceled is no longer valid.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. Calling this method is safe at any time. The call might block until another ongoing call to a method of this selector has finished. The reason is that it is synchronizing on the key set of the selector. After this call finishes, the key will have been added to the selectors canceled-keys set and will not be included in any future selects of this selector. since Android 1.0
public abstract java.nio.channels.SelectableChannel	channel() Gets the channel of this key. return the channel of this key. since Android 1.0
public abstract int	interestOps() Gets this key's {@link SelectionKey interest set}. The returned set has only those bits set that are valid for this key's channel. return the interest set of this key. throws CancelledKeyException if the key has already been canceled. since Android 1.0
public abstract java.nio.channels.SelectionKey	interestOps(int operations) Sets the {@link SelectionKey interest set} for this key. param operations the new interest set. return this key. throws IllegalArgumentException if a bit in {@code operations} is not in the set of {@link SelectableChannel#validOps() valid operations} of this key's channel. throws CancelledKeyException if the key has already been canceled. since Android 1.0
public final boolean	isAcceptable() Indicates whether this key's channel is interested in the accept operation and is ready to accept new connections. A call to this method is equal to executing {@code (readyOps() & OP_ACCEPT) == OP_ACCEPT}. return {@code true} if the channel is interested in the accept operation and is ready to accept new connections, {@code false} otherwise. throws CancelledKeyException if the key has already been canceled. since Android 1.0 return (readyOps() & OP_ACCEPT) == OP_ACCEPT;
public final boolean	isConnectable() Indicates whether this key's channel is interested in the connect operation and is ready to connect. A call to this method is equal to executing {@code (readyOps() & OP_CONNECT) == OP_CONNECT}. return {@code true} if the channel is interested in the connect operation and is ready to connect, {@code false} otherwise. throws CancelledKeyException if the key has already been canceled. since Android 1.0 return (readyOps() & OP_CONNECT) == OP_CONNECT;
public final boolean	isReadable() Indicates whether this key's channel is interested in the read operation and is ready to read. A call to this method is equal to executing {@code (readyOps() & OP_READ) == OP_READ}. return {@code true} if the channel is interested in the read operation and is ready to read, {@code false} otherwise. throws CancelledKeyException if the key has already been canceled. since Android 1.0 return (readyOps() & OP_READ) == OP_READ;
public abstract boolean	isValid() Indicates whether this key is valid. A key is valid as long as it has not been canceled. return {@code true} if this key has not been canceled, {@code false} otherwise. since Android 1.0
public final boolean	isWritable() Indicates whether this key's channel is interested in the write operation and is ready to write. A call to this method is equal to executing {@code (readyOps() & OP_WRITE) == OP_WRITE}. return {@code true} if the channel is interested in the wrie operation and is ready to write, {@code false} otherwise. throws CancelledKeyException if the key has already been canceled. since Android 1.0 return (readyOps() & OP_WRITE) == OP_WRITE;
public abstract int	readyOps() Gets the set of operations that are ready. The returned set has only those bits set that are valid for this key's channel. return the operations for which this key's channel is ready. throws CancelledKeyException if the key has already been canceled. since Android 1.0
public abstract java.nio.channels.Selector	selector() Gets the selector for which this key's channel is registered. return the related selector. since Android 1.0