class Movie...
    private Price price;

    public int getPriceCode() {
      return price.getPriceCode();
    }

    public void setPriceCode( int priceCode) {
      switch( priceCode) {
        case REGULAR: 
          price = new RegularPrice();
          break;

        case CHILDRENS:
          price = new ChildrensPrice();
          break;

        case NEW_RELEASE:
          price = new NewReleasePrice();
          break;

        default:
          throw new IllegalArgumentException( "Incorrect Price Code");
      }
    }

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