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javamultithreadingworker
Pijusn
Pijusn

Reputation: 11293

Java Worker Thread to Wait

I have a thread working in the background and but it doesn't always has work to do. I want it to wait for data to be passed by the main thread and then continue working.

At first I thought that's what wait() and notify() were for but it seems to work the other way around.

How do I do that?

Upvotes: 1

Views: 877

Answers (2)

Peter Lawrey
Peter Lawrey

Reputation: 533442

I would suggest you use an ExecutorService. I combines a queue with a Thread pool.

You submit tasks to it which are performed in the background as it can and you can obtain the result if you want.

ExecutorService service = Executors.newWhateverPool();
service.submit(new Runnable() {  your task here });

Upvotes: 6

obataku
obataku

Reputation: 29636

See my comment.

Sounds like you want a BlockingQueue -- this is a very common requirement for producer-consumer problems. Try not to reinvent the wheel ;-)

There exist multiple BlockingQueue implementations, e.g. a bounded ArrayBlockingQueue, an unbounded LinkedBlockingQueue, a hand-off SynchronousQueue, even a PriorityBlockingQueue. All BlockingDeques and TransferQueues are also BlockingQueues ;-)

Upvotes: 6

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