How to 'properly' extend javax.swing.JFrame with nashorn?

[A. Sundararajan]

Are you looking for a way to introduce a new constructor? That is not 
supported. The class extension in nashorn is more like Java anonymous 
classes - There too you don't introduce a new constructor - just use 
existing constructor to construct new object.

You can workaround with:

function createMyFrame() {
   var my = Java.extend(.....) { ... }
   my.setSize(800, 600);
   my.visible = true;
   return my;
}

-Sundar

Christian MICHON wrote:
> Hi,
>
> [ I tried to contact Sundar directly (still no answer), but I'd like to get
> nashorn devs opinion as well. ]
>
> I'm currently trying to extend a javax.swing.JFrame to make a small gui
> using nashorn.
>
> When I'm doing this with java or jruby, it's straight forward and quite
> easy to code a contructor of the derived class to customize dimensions for
> example.
>
> Yet with nashorn I'm struggling: how is named the constructor?
>
> I've a small snippet below to share: I'd like to know what is supposed to
> be in place of XYZ to make frame appear properly (dimensions 800x600).
>
> var myJFrame = Java.extend(javax.swing.JFrame, {
>   XYZ: function() {
>     setSize(800, 600);
>     setVisible(true);
>   }
> });
> var my = new myJFrame();
> java.lang.Thread.currentThread().join();
>
>
> Thanks in advance.
> Christian
>