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Where is aysnc await?

CompleteableFuture[1] is the closest we got for now in the JDK.

[1] https://docs.oracle.com/javase/8/docs/api/java/util/concurre...

I just started using CompletableFuture last week. The way each method ties your lambdas together without a bunch of type boilerplate is really nice. I still don't have a great handle on all of its methods, though; e.g., what's the difference between get() and join()?

CompletableFuture implements Future, so the get method is an implementation of Future.get [1].

Anyway, the major difference is that Future.get throws 2 checked exceptions, InterruptedException and ExecutionException, while CompletableFuture.join does not throw any checked exception. Instead, it wraps any exceptions in CompletionException.

[1] https://docs.oracle.com/javase/7/docs/api/java/util/concurre...

In Scala: https://github.com/scala/async

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