there is a significant error in the page at http://docs.oracle.com/javase/8/docs/technotes/guides/scripting/prog_guide/javascript.html#A1147269

The sentence:

"Whichever syntax you choose, if you need to invoke a constructor with arguments, you can specify the arguments after the implementation object or function.”

should instead read:

"Whichever syntax you choose, if you need to invoke a constructor with arguments, you can specify the arguments before the implementation object or function.”

that is "arguments after" becomes "arguments before". This was reported when a user got misled; see http://stackoverflow.com/questions/34861880/extending-an-abstract-sam-class-with-parameters-in-nashorn