Java 8: Removing null checks with Optional

deadcoderising.com

3 pointsmariushe3 comments

"How to remove null checks and then add them back again as a library feature."

The difference being, of course, that having an Optional type forces you to check if it's null or not before getting at the underlying object.

So we now have explicit optional to go with implicit optional. Still looking for an explicit not-optional where the compiler will complain when a possibly-null value is passed in :(

Something like the @NonNull annotation?

https://blogs.oracle.com/java-platform-group/entry/java_8_s_...

Edit: @NonNull rather than @NotNull. This annotation has existed in various guises and frameworks for a while, usually as @NotNull which is is probably why it's called @NonNull (avoiding breaking changes)

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