public interface Pollable<E>
| Modifier and Type | Method and Description | 
|---|---|
E | 
poll()
Removes and returns the next element, or returns null if none is present. 
 | 
E | 
poll(long timeout, TimeUnit unit)
Removes and returns the next element, or returns null upon timeout. 
 | 
E poll()
E poll(long timeout, TimeUnit unit) throws InterruptedException
timeout - how long to wait before giving up, in units of unitunit - a TimeUnit determining how to interpret the timeout parameterInterruptedException - if interrupted while waiting