# multiplatform

Andy Victors

02/05/2021, 10:46 AM
What is the proper way of using generated from MPP library .jar in Android Studio? I have created a minimal library to test, with JVM target. Then I try to manually included generated .jar into Android Studio project but classes cannot be found (Invalidate caches already tried:/)
.jar content looks good to me, but the classes are not found. This is the MPP library project created after official instructions.
Finally found the reason: in my case kotlin file in library which I tried to access, did not have the "package" directive on top.