TimeUnit) throw an ExecutionException with the same cause as held in the corresponding CompletionException. To simplify usage in most contexts, this class also defines methods join() and getNow that instead throw the CompletionException directly in these cases. ...
// Variations of runAsync() and supplyAsync() methods static CompletableFuture<Void> runAsync(Runnable runnable) static CompletableFuture<Void> runAsync(Runnable runnable, Executor executor) static <U> CompletableFuture<U> supplyAsync(Supplier<U> supplier) static <U> CompletableFuture<U> supplyAsync(Supp...
All async methods without an explicit Executor argument are performed using the ForkJoinPool.commonPool() (unless it does not support a parallelism level of at least two, in which case, a new Thread is created to run each task). To simplify monitoring, debugging, and tracking, all generated...
As far as I love Java 8’sCompletableFuture, it has its downsides –idiomatic handling of timeoutsis one of them. Luckily, JDK 9 brought two new methods that provide the functionality everyone longed for – which is crucial for ensuring the proper resiliency when working with asynchronous proce...
Actions supplied for dependent completions of non-async methods may be performed by the thread that completes the current CompletableFuture, or by any other caller of a completion method 所以我们需要join方法等待结果的完成。 1 2 3 4 5 6
Actions supplied for dependent completions of non-async methods may be performed by the thread that completes the current CompletableFuture, or by any other caller of a completion method. 翻译:传递给 non-async 方法作为参数的函数(action)可能会在完成当前的 CompletableFuture 的线程中执行,也可能会在方...
CompletableFuture is a class that represents a future result of an asynchronous computation. It can be completed either with a value or an exception. CompletableFutures can be combined using various methods such asthenApply,thenCompose, andthenCombine. ...
// Variations of runAsync() and supplyAsync() methodsstatic CompletableFuture<Void> runAsync(Runnable runnable)static CompletableFuture<Void> runAsync(Runnable runnable, Executor executor)static <U> CompletableFuture<U> supplyAsync(Supplier<U> supplier)static <U> CompletableFuture<U> supplyAsync(Supplier<...
Things are not so simple for the non-async methods like thenAccept. Java uses this policy:If the future for which thenAccept() is called has already completed prior to the call then the lambda will be called in the same thread that called thenAccept(). If the future has not completed yet...
Bloated API (?) Fifty methods in total, most in three variants. Splittingsettableandlistenable(see above) would help. Also some methods likerunAfterBoth()orrunAfterEither()IMHO do not really belong to anyCompletableFuture. Is there a difference betweenfast.runAfterBoth(predictable, ...)andpredi...