[in4core]

public class SuperClass extends Sprite{
 
   public function SuperClass()  { super(); }
   public function init():void { trace('superClass'); }
}
 
public class Extended extends SuperClass {
 
public function Extended() { super(); }
override public function init():void { trace('child of superClass') , super.init() }
}
 
Main.as
 
var child:Extended = new Extended();
child.init() // child of superClass , superClass