Why use Optional.of over Optional.ofNullable?

Question

When using the Java 8 Optional class, there are two ways in which a value can be wrapped in an optional.

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Answer 1

Optional should mainly be used for results of Services anyway. In the service you know what you have at hand and return Optional.of(someValue) if you have a result and return Optional.empty() if you don't. In this case, someValue should never be null and still, you return an Optional.