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like I hava a kotlin function:

object KotlinFunc {
    @JvmStatic
    fun create(mycls: KClass<*>) {...}
}

I want to invoke this function in java code, but this not working:

public void javaFunc() {
   KotlinFunc.create(MyClass.class)
}

over 4 years ago · Santiago Trujillo

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Answer 1 · 2022-05-24T16:05:55.968Z

It is possible by using calling the getKotlinClass function in Java:

kotlin.jvm.JvmClassMappingKt.getKotlinClass(MyClass.class);

you can invoke your function like this:

kotlin.reflect.KClass<MyClass> kClass = kotlin.jvm.JvmClassMappingKt.getKotlinClass(MyClass.class);
KotlinFunc.create(kClass);

and make sure that kotlin-reflect is in your classpath, e.g.:

with Gradle Kotlin:

dependencies {
    ...
    implementation(kotlin("reflect"))
    ...
}

with Gradle Groovy:

dependencies {
    ...
    implementation 'org.jetbrains.kotlin:kotlin-reflect'
    ...
}

Answer 2 · 2022-05-24T16:05:55.976Z

You can do it this way using the standard library:

KClass kotlinClass = Reflection.createKotlinClass(MyClass.class);
KotlinFunc.create(kotlinClass)

Answer 3 · 2022-05-24T16:05:55.988Z

It is declared in kotlin.jvm.JvmClassMapping.kt (source code).

In Java it will look as a static method <T> KClass<T> getKotlinClass(Class<T>) in the class kotlin.jvm.JvmClassMappingKt.