Java / Concurrent collections

What are the 4 forms of BlockingQueue methods?

BlockingQueue methods are categorized into 4 forms due to its way of handling operations that cannot be satisfied immediately, but may be satisfied at some point in the future.

Methods that throws an exception, for example, add(element) throws exception while trying to add the element failed when queue is full.
Methods that return a special value (either null or false, depending on the operation).
one that blocks the current thread indefinitely until the operation can succeed.
the fourth blocks for only a given maximum time limit before giving up.

		Special Value	Blocks	Time Out
Insert	add(o)	offer(o)	put(o)	offer(o, timeout, timeunit)
Remove	remove(o)	poll()	take()	poll(timeout, timeunit)
Examine	element()	peek()

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Java Serialization

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Java / Concurrent collections

What are the 4 forms of BlockingQueue methods?

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