class Movie...
    public double getCharge( int daysRented) {
      return price.getCharge( daysRented);
    }

  class Price...
    public double getCharge( int daysRented) {
      double result = 0;
      switch( getPriceCode()) {
        case Movie.REGULAR:
          result += 2;
          if( daysRented>2)
            result += ( daysRented-2)*1.5;
          break;

        case Movie.NEW_RELEASE:
          result += daysRented*3;
          break;

        case Movie.CHILDRENS:
          result += 1.5;
          if( daysRented>3)
            result += ( daysRented-3)*1.5;
          break;
      }
      return result;
    }

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