Refactoring-ch01-replace-cond-with-polymorphism-after-move.java

class Movie...
    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;
}