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Class java.lang.ref.ReferenceQueue 

java.lang.Object
    |
    +----java.lang.ref.ReferenceQueue
public class ReferenceQueue
extends Object
Reference queues, to which registered reference objects are appended by the garbage collector after the appropriate reachability changes are detected.

Since:
JDK1.2
See Also:
Reference

Variable Index

o POLL
Timeout value that requests polling, that is, no blocking.

Constructor Index

o ReferenceQueue()
Construct a new reference-object queue.

Method Index

o remove()
Remove the next reference object in this queue, blocking until one becomes available.
o remove(long)
Remove the next reference object in this queue, blocking until either one becomes available or the given timeout period expires.

Variables

o POLL 
public static final long POLL
Timeout value that requests polling, that is, no blocking.

Constructors

o ReferenceQueue 
public ReferenceQueue()
Construct a new reference-object queue.

Methods

o remove 
public Reference remove(long timeout) throws InterruptedException
Remove the next reference object in this queue, blocking until either one becomes available or the given timeout period expires.

Parameters:
timeout - If positive, block for up timeout milliseconds while waiting for a reference to be added to this queue. If zero, block indefinitely. If equal to POLL, do not block.
Returns:
A reference, if one was available, otherwise null. If a reference is returned, it will no longer be registered.
Throws: InterruptedException
If the timeout wait is interrupted
o remove 
public Reference remove() throws InterruptedException
Remove the next reference object in this queue, blocking until one becomes available. The returned reference will no longer be registered.

Throws: InterruptedException
If the wait is interrupted
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