Sep 13, 2018 · CompletableFuture.supplyAsync(() -> MyFileService.service3(); } I understand that that CompletableFuture is new from Java 8, but how is the 2nd code better than the 1st? …

CompletableFuture .supplyAsync(() -> { A a = doSomethingAndReturnA(); convertToB(a); }); Right? Furthermore, another two questions following as for "is there any reason why we would …

Apr 26, 2014 · Java 8 introduces CompletableFuture, a new implementation of Future that is composable (includes a bunch of thenXxx methods). I'd like to use this exclusively, but many …

CompletableFuture<User> future = CompletableFuture.runAsync(() -> doFoo(), myExecutor); And all of your exceptionally logic you would do with the returned CompletableFuture from that …

Dec 12, 2015 · For example: CompletableFuture.allOf, the passed list might be a CompletableFuture originated from a Runnable, so we can't get the result. Having said all of …

The part about exceptionally() is a bit distracting because it isn't relevant, as exceptionally(…) can be used with either get() or with join(). Perhaps you were trying to add additional commentary …

Apr 15, 2018 · The default executor of CompletableFuture is the common pool of the ForkJoinPool, which has a default target parallelism matching the number of CPU cores minus …

Jan 5, 2023 · As far as I see, I can use Thread, Runnable or CompletableFuture in order to implement multi threading in a Java app. CompletableFuture seems a newer and cleaner way, …

Nov 29, 2019 · By the way, the equivalent of flatMap for completableFuture is thenCompose() which takes a function that takes the element returned by the Future as an input and must …

Feb 11, 2016 · Java's CompletableFuture is innovated by Scala's Future. It carries an internal callback method. Once it is finished, the callback method will be triggered and tell the thread …