![]() If (!executorService.awaitTermination(800, TimeUnit. One good way to shut down the ExecutorService (which is also recommended by Oracle) is to use both of these methods combined with the awaitTermination() method: executorService.shutdown() The break statement can also be used to jump out of a loop. ![]() It was used to 'jump out' of a switch statement. It is up to the developer to decide what to do with these tasks. You have already seen the break statement used in an earlier chapter of this tutorial. This method returns a list of tasks that are waiting to be processed. The shutdownNow() method tries to destroy the ExecutorService immediately, but it doesn't guarantee that all the running threads will be stopped at the same time: List notExecutedTasks = executorService.shutDownNow() It will make the ExecutorService stop accepting new tasks and shut down after all running threads finish their current work: executorService.shutdown() The shutdown()method doesn't cause immediate destruction of the ExecutorService. To properly shut down an ExecutorService, we have the shutdown() and shutdownNow() APIs. On the other hand, an app could reach its end but not be stopped because a waiting ExecutorService will cause the JVM to keep running. 8 Information about this BlueJ tutorial The tutorial is described from the perspective of the user cheung (Because it was developed by Professor Cheung) The. More information about BlueJ is available at. It was designed and implemented by the BlueJ team at Monash University, Melbourne, Australia. BlueJ is a Java development environment specifically designed for teaching at an introductory level. ![]() In some cases this is very helpful, such as when an app needs to process tasks that appear on an irregular basis or the task quantity is not known at compile time. About BlueJ This tutorial is an introduction to using the BlueJ programming environment.
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