Is there a way to deprecate a java method but only...

# announcements

[Jonathan]

Is there a way to deprecate a java method but only when used from Kotlin? And still consider usages from Java as non-deprecated?

[Hamza]

what is the use case for this

[Jonathan]

For instance doing things like Preconditions.assertNotNull() is good practice in Java. But in Kotlin proper type nullability is better

[Jonathan]

therefore I'd like to see this method as deprecated from Kotlin code, but not from Java code.

[Hamza]

why not write this code in kotlin

[Jonathan]

Because in kotlin this kind of assertion is not required, nor should be used. Nullability should be declared in the type when writing kotlin code.

[Hamza]

when public kotlin methods are used with non null types, the byte code adds a check to make sure they are non null

[Jonathan]

yes and that the point

[Hamza]

what’s wrong with that

[Jonathan]

I want to discourage the use of this method in Kotlin, since the Kotlin compiler already do everything

[Jonathan]

But I don't want to discourage its usage from Java where it is still necessary

[arekolek]

you could probably write a lint check for that