my interface: interface UrlContentRetrieved { fun onUrlContentRetrieved(content: String) } java code: task.setListener(new UrlContentRetrieved() { @Override public void onUrlContentRetrieved(String content) { parseResults(content); } }); is converted to task.listener = UrlContentRetrieved { content -> parseResults(content) } and i got error Error:(31, 25) Interface UrlContentRetrieved does not have constructors

amorenew: this should be acceptable

I use 1.2

let me reproduce it

I posted image of the error

Your welcome