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kotlinlang

I got a nasty NullPointerException because I didn't check the nullability of a return platform type (in my case `String!`); is there an option to treat these platform types as nullable by default, meaning you have to consciously choose to deal with their possible nullability?

But for your own code you can use JSR-305 annotations

And the reason why it’s not an option by default and even not available, is a lot of different interoperability issues with existing Java APIs, you can hear about details and rationale of this in this talk
<https://www.youtube.com/watch?v=2IhT8HACc2E>