class DelegatingShape {



  protected final Location loc = new Location(0, 0);

  protected final Dimension dim = new Dimension(0, 0);



  public double getX()              { return loc.getX(); }

  public double getY()              { return loc.getY(); }



  public double getWidth()          { return dim.getWidth(); }

  public double getHeight()         { return dim.getHeight(); }

 

  public void adjustLocation()   { loc.adjust(); }

  public void adjustDimensions() { dim.adjust(); }

}



class Location {

  protected double x;

  protected double y;



  public Location(double initX, double initY) { 

    x = initX; 

    y = initY; 

  }



  public synchronized double getX() { return x;}

  public synchronized double gety() { return y; }



  public synchronized void adjust() {

    x = longCalculation1(); 

    y = longCalculation2();

  }



  protected double longCalculation1() { /* ... */ }

  protected double longCalculation2() { /* ... */ }



}





class Dimension { 

  protected double width;

  protected double height;



  public Dimension(double initW, double initH) { 

    width = initW; 

    height = initH; 

  }



  public synchronized double getWidth() { return width;}

  public synchronized double getHeight() { return height; }



  public synchronized void adjust() {

    width = longCalculation3(); 

    height = longCalculation4();

  }



  protected double longCalculation3() { /* ... */ }

  protected double longCalculation4() { /* ... */ }



}