Inheritance question / problem-Collection of common programming errors

I used delegation, although somewhat differently. The only overloaded method I have in my class was an overloaded dispatchDraw. So I moved it to a different class and included an instance of it in each of the classes that extend.

 class MyLinearLayout extends LinearLayout {
        MyDraw md = new MyDraw();

        @Override
        protected void dispatchDraw(Canvas canvas) {    
            md.draw(canvas);
            super.dispatchDraw(canvas);
        }
 }

 class MyRelativeLayout extends RelativeLayout {
      //    as above
 }

Although I still have two classes that extend, but I’m not duplicating the code that was duplicated before which was what I wanted to achieve.