Constants

Since everything in Java is an object (unless you're a primitive type), we're used to putting all the constants inside our objects as static members.

And since Kotlin has companion objects, we usually try putting them there:

class MyClass {
    companion object {
        val MY_CONST = "My Const"
    }
}

This will work, but you should remember that companion object is an object, after all.

So, this will be translated to the following code, more or less:

public final class Spock {
   @NotNull
   private static final String MY_CONST = "My Const";
   public static final Spock.Companion Companion = new Spock.Companion(...);

   public static final class Companion {
      @NotNull
      public final String getMY_CONST() {
         return MyClass.MY_CONST;
      }

      private Companion() {
      }
   }
}

And the call to our constant looks like this:

String var1...