What is the purpose of `CompletableFuture` in Java asynchronous programming? Java AssociateHard Try Now
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What is the result of the following code? “`java int[] arr = {1, 2, 3}; int[] copy = arr; copy[0] = 99; System.out.println(arr[0]); “` Java AssociateHard Try Now
What is functional interface in Java 8 and what are three built-in examples? Java AssociateHard Try Now
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