Средства и методы разработки

fun main(args: Array<String>) {
    println("Hello World!")

    var primitive_int =33
    var primitive_long =3434L
    println(primitive_int  + primitive_long)

}

компилирую, дизассемблирую получившийся jar в java получаю

import kotlin.Metadata;
import kotlin.jvm.internal.Intrinsics;
import org.jetbrains.annotations.NotNull;

@Metadata(
   mv = {1, 5, 1},
   k = 2,
   xi = 48,
   d1 = {"\u0000\u0014\n\u0000\n\u0002\u0010\u0002\n\u0000\n\u0002\u0010\u0011\n\u0002\u0010\u000e\n\u0002\b\u0002\u001a\u0019\u0010\u0000\u001a\u00020\u00012\f\u0010\u0002\u001a\b\u0012\u0004\u0012\u00020\u00040\u0003¢\u0006\u0002\u0010\u0005¨\u0006\u0006"},
   d2 = {"main", "", "args", "", "", "([Ljava/lang/String;)V", "untitled14"}
)
public final class MainKt {
   public static final void main(@NotNull String[] args) {
      Intrinsics.checkNotNullParameter(args, "args");
      String var1 = "Hello World!";
      boolean var2 = false;
      System.out.println(var1);

      int primitive_int = 33;
      long primitive_long = 3434L;

      long var4 = (long)primitive_int + primitive_long;

      boolean var6 = false;
      System.out.println(var4);
   }
}