Hi! Can I access `<http://java.io|java.io>.InputStream` in Kotlin? When I converted Java class(that ...

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[German Politov]

Hi! Can I access <http://java.io|java.io>.InputStream in Kotlin? When I converted Java class(that had InputStream type field) to Kotlin that field was accessible in Kotlin, but when I created a new Kotlin class in Kotlin project InputStream was not accessible like it's presented on screenshot.

[marstran]

Is your project configured as a JVM-project?

[Vampire]

If you target the JVM, you can by having the jvm stdlib as dependency.
Actually if you did not declare any stdlib dependency the correct one should be added automatically.

[Vampire]

At least when using Gradle and Kotlin 1.4

[German Politov]

It is Kotlin Multiplatform project

[Vampire]

And the code is in the common part or in the jvm part?

[German Politov]

in common part

[Vampire]

common could also run on iOS, so using java classes is hardly possible I guess

[German Politov]

ahh.yes, i see. It rather platform specific implementation using expect-actual pattern. But I'm wondering if there is any doc that describes such limitation like using java's inputstream from common part in KMP?

[German Politov]

just checked, in jvm part InputStream is accessible

[Vampire]

I have no idea, I don't do KMM or KMP development, just pure JS or pure JVM.
But actually it is common sense that you cannot use platform-specific classes in platform independent code without the expect-actual pattern. 😄

[German Politov]

yup, that's right. Thanks :)

[Tobias Berger]

Well, how much doc do you need? The common part of a KMP can't have any platform-specific dependencies. If it has no JVM dependencies, you can't use any Java classes

[Tobias Berger]

so basically what @Vampire said. Sorry, didn't read the whole comment before sending mine

[Vampire]

dw

[German Politov]

sure, that's platform specific class, expect-actual pattern should be used for that