Composite Example /** Component */ interface Graphic { public void print(); } /** Composite */ class CompositeGraphic implements Graphic { private List mChildGraphics = new ArrayList (); public void print() { for (Graphic graphic : mChildGraphics) { graphic.print(); } public void add(Graphic graphic) { mChildGraphics.add(graphic); } public void remove(Graphic graphic) { mChildGraphics.remove(graphic); } class Ellipse implements Graphic { public void print() { System.out.println( Ellipse ); }