Creating Java Interfaces with Kotlin

1

Hi,

I’m trying to use Kotlin with JewelCLI which requires that I be able to:

  • Create a Java interface
  • Annotate that interface
  • Reference the interface class (e.g. MyOptions.class)

e.g.:

public interface MyExample
{
  @Option
  String getMyOption();

  @Option(helpRequest = true)
  boolean getHelp();
}







public static void main(String  args)

{

  try

  {

  MyExample result = CliFactory.parseArguments(MyExample.class, args);

  […]

  }

  catch(ArgumentValidationException e)

  {

  […]

  }

}

Note: there are a few alternatives to this e.g.:

  • Use the 'instance' alternative with JewelCLI
  • Use a different CLI parser

But I'm curious if this is something that I can do in Kotlin, and if so, how?

2

I think this should work: 

public trait MyExample {
  Option fun getMyOption(): String
  ...
}

ClipFactory.parseArgument(javaClass<MyExample>(), args)

3

That worked. Thanks!