publicstatic<U> CompletableFuture<U>supplyAsync(Supplier<U> supplier);publicstaticCompletableFuture<Void>runAsync(Runnable runnable);// 直接绑定值publicstatic<U> CompletableFuture<U>completedFuture(U value)publicstatic<U> CompletableFuture<U>failedFuture(Throwable ex);// JDK9publicCompletableFuture(){}/...
CompletableFuture<Void> future2 = CompletableFuture.runAsync(() -> { LOG.info("Return result of Run Async."); }); CompletableFuture<String> future3 = CompletableFuture.supplyAsync(() -> {return"hello"; }); CompletableFuture<String> future4 = CompletableFuture.supplyAsync(() -> {return"worl...
岁月史书:Future, ExecutorService, BlockingQueue, AQS 等在 JDK1.5 推出,随后 Google Guava 类库提供了 ListenableFuture 补全了 Future 的回调功能,CompletableFuture 借鉴了 ListenableFuture 功能,结合函数式支持,在 JDK1.8 推出。 1. 链式调用 publicclassCompletableFuture<T>implementsFuture<T>,CompletionStage<T> ...
岁月史书:Future, ExecutorService, BlockingQueue, AQS 等在 JDK1.5 推出,随后 Google Guava 类库提供了 ListenableFuture 补全了 Future 的回调功能,CompletableFuture 借鉴了 ListenableFuture 功能,结合函数式支持,在 JDK1.8 推出。 1. 链式调用 publicclassCompletableFuture<T>implementsFuture<T>,CompletionStage<T> ...
ListenableFuture和CompletableFuture都比它的父类Future更有优势，因为它们允许调用者以一种或另一种方式“...
处于中间层的聚合型服务，面对的挑战则是依赖的服务太多，后端个别服务的性能延迟就会影响其吞吐量。性能...
Future和CompletableFuture解析与使用 一、Future模式 Java 1.5开始,提供了Callable和Future,通过它们可以在任务执行完毕之后得到任务执行结果。 Future接口可以构建异步应用,是多线程开发中常见的设计模式。 当我们需要调用一个函数方法时。如果这个函数执行很慢,那么我们就要进行等待。但有时候,我们可能并不急着要结果。
As we know, theFutureinterface doesn’t provide callback functionality.ListenableFutureandCompletableFutureboth fill this gap. In this tutorial, we’ll learn callback mechanisms using both of them. 2. Callback in Async Task Let’s define a use case where we need to download image files from ...
* it will have to return a temporary {@code Future} handle that just passes a value * through: for example, Spring's {@link AsyncResult}, EJB 3.1's {@link jakarta.ejb.AsyncResult}, * or {@link java.util.concurrent.CompletableFuture#completedFuture(Object)}. * {@code (Completable)Future...
WebSocketClient now has execute methods, which do the same as doHandshake, but return CompletableFutures (cf. the reactive WebSocketClient). All other changes: add an overloaded method that takes a CompletableFuture parameter instead of ListenableFuture, and/or add a method with a 'Async' suffix...