Is it safe / good practice to "reuse" CompletedFuture

Question

When experimenting with CompletableFutureme, I was wondering if this code is safe.

    CompletableFuture<Integer> foo = CompletableFuture.supplyAsync(() -> 42);

    foo.thenApply((bar) -> {
        System.out.println("bar " + bar);
        return bar;
    })
    .acceptEither(foo.thenApply((baz) -> {
        System.out.println("baz " + baz);
        return baz;
    }),
    (z) -> System.out.println("finished processing of " + z));

Works, print

bar 42
baz 42
finished processing of 42

Is it a good / good idea to call thenApplyother methods more than once on a given instance CompletableFuture?

Answer 1

What you are describing is not "reuse" CompleteableFuture, as it performs only one action and ends no more than once.

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