Java 8 CompletableFutures
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loveprogramming viết ngày 03/04/2021

https://grokonez.com/java/java-8/java-8-completablefutures

Java 8 CompletableFutures

Java 8 multithreading programming has an important feature named CompletableFuture.
In previous post about Java Future, we have the concept of a Future object, which can help us make something done while waiting for other things. However, although we can inspect Future objects to see if they’re done, what if we wanna execute some code whenever its ready? We still have to wait until the result is available.

CompletableFuture meets the requirement, and more than that.

Related articles:

I. Create CompletableFuture

We use one of those factory methods to create a CompletableFuture object:

static <U> CompletableFuture<U> supplyAsync(Supplier<U> supplier);
static <U> CompletableFuture<U> supplyAsync(Supplier<U> supplier, Executor executor);
static CompletableFuture<Void> runAsync(Runnable runnable);
static CompletableFuture<Void> runAsync(Runnable runnable, Executor executor);

If we don't provide any Executor object as input parameter, the method will use ForkJoinPool.commonPool()

https://grokonez.com/java/java-8/java-8-completablefutures

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