The DefaultConstructorMarker class is just an empty class that gets added as last parameter to constructors with default-value logic. The Intrinsics class contains the some sanity check logic used for example for not-null properties (without ?) and other constraint-checks. Checkmark JVM 8 Target and click on the Decompile button to get the Java code.
Navigate to Tools > Kotlin > Show Kotlin Bytecode. Open the Kotlin file that should be converted to Java. The package constains some classes that are required at runtime, as they are compiled into the resultingĬlass files. Here’s a step-by-step demonstration for converting a Kotlin file to a Java file using Android Studio. The retention-policy is CLASS only, so the annotation cannot be read using reflection and thus the org.jetbrains annotations.jar is not necessarily required at runtime. Unfortunately the JSR-305 was never properly released, so Kotlin uses the IntelliJ specific class, which feels kind of murky but cannot be changed. Kotlin Kotlin compiler might also add a annotation to fields or methods which should never contain/return null values.
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