Instanced mc1 does not appear on stage

Hello. Apologies if this has been posted before-I’ve scanned various threads, referenced the online Flash CS4 docs. I’m new to Flash, come from a Java background.

I have a mc1 in the library and corresponding Actionscript file referenced, but for the life of me, I can’t get instanced DisplayObject on the stage (other than physically dragging and dropping the movie symbol on the stage).

Below is the code:

[FONT=Lucida Console][SIZE=2]package {

import flash.display.MovieClip;


    
public class InnerRing extends MovieClip {
    
    var mc1:MovieClip = new MovieClip();


    public function InnerRing() {
        
        addChild(mc1);

    }
    
}

}[/SIZE][/FONT]