Углотный элемент чтения от HTML по имени Атрибута
CompletableFuture<Long> completableFuture = CompletableFuture.supplyAsync(() -> factorial(number));
while (!completableFuture.isDone()) {
System.out.println("CompletableFuture is not finished yet...");
}
long result = completableFuture.get();
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