``` val holder = GeneratedKeyHolder return holder key toLong kotlinlang #spring

``` val holder = GeneratedKeyHolder() return holde...

rrader

04/27/2018, 6:52 AM

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val holder = GeneratedKeyHolder()
return holder.key.toLong()

I get "Expected type does not accept nulls in Kotlin, but the value may be null in Java" How to fix it?

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