I create a thread pool to deal with the task, after deal with the task,I find I can not add and start the other task? How to fix it? If I change the executor by executor = new ThreadPoolExecutor(3, 3, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>(), new NamedThreadFactory(“timeOutTh…
Tag: threadpoolexecutor
Callable in ExecutorService with shared data
I have a scenario which I have somehow simulated into the following: I have a list of Callable tasks that are being executed in 4 threads. The execution should return a value(a Map<String, String>). Each task has an item attribute. If for a task I get timeout (I have a Timeout flag in a Map<> that…
Spring SmartLifecycle start() method not executed
In my spring app I have a thread pool manager that during start() creates some threads and add those to the pool. But while running the start() method is never executed. Any help will be really appreciated. Answer This is for someone facing similar problem. isRunning() is called before start() therefore make …
how to understand this interface Executor example in Java API docs [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago. Improve this question Can anyone help to explain this piece of code in details? I am learning ja…
Impossible to make a cached thread pool with a size limit?
It seems to be impossible to make a cached thread pool with a limit to the number of threads that it can create. Here is how static Executors.newCachedThreadPool is implemented in the standard Java library: So, using that template to go on to create a fixed sized cached thread pool: Now if you use this and su…
Executors.newCachedThreadPool() versus Executors.newFixedThreadPool()
newCachedThreadPool() versus newFixedThreadPool() When should I use one or the other? Which strategy is better in terms of resource utilization? Answer I think the docs explain the difference and usage of these two functions pretty well: newFixedThreadPool Creates a thread pool that reuses a fixed number of t…