a while back i wrote a library to learn kotlin. wh...

# getting-started

[danneu]

a while back i wrote a library to learn kotlin. when i try to use it in another project, it throws java.lang.NoClassDefFoundError: com/beust/klaxon/Parser on this line: https://github.com/danneu/reddit/blob/master/src/main/kotlin/com/danneu/reddit/extensions.kt#L44

i'm not very experienced in java/kotlin, any pointers on what might cause this when using a library from another project?

[ilya.gorbunov]

danneu: Just a guess, do you use IDEA <= 2016.3 and run the application from there?
In that case dependencies might get incorrect scope when gradle project is imported.

[ilya.gorbunov]

Anyway, you should check whether the runtime classpath contains the library, where com/beust/klaxon/Parser comes from

[danneu]

@ilya.gorbunov i'm running it from 2017.1.2. i got the project to run by adding the same version com.beust.klaxon as a dependency to my child project which is something i wouldn't want library consumers to have to do

[ilya.gorbunov]

I've checked the generated pom file https://jitpack.io/com/github/danneu/reddit/0.0.1/reddit-0.0.1.pom and it seems to contain a valid compile dependency on that library. So if you consume your reddit library it should have klaxon as a transitive dependency downloaded.

[danneu]

@ilya.gorbunov that would mean that the project that uses my lib shouldn't have to explicitly import a dependency my lib already has, right?

[ilya.gorbunov]

right

[ilya.gorbunov]

Assuming that project uses maven or gradle to fetch your library and its dependencies

[danneu]

i republished my library and it seems to work without the previous error.