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by kjeetgill
2556 days ago
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That's not really "why" it was introduced. Optional is used as a null wrapper in other JVM languages so that idiom bled over pretty naturally. Here's a talk "Optional - Mother of all Bikesheds" by Stuart Marks, the guy who added it to OpenJDK: https://m.youtube.com/watch?v=Ej0sss6cq14 It was mostly just meant to cover the zero or one case on fluent-style interfaces like the Streams API, so check as getFirst() or getAny(). In hindsight, the name Optional was a poor choice if they didn't want the idiom coming over. |
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