public class ChildrensPrice extends Price { static private final ChildrensPrice PRICE = new ChildrensPrice(); private ChildrensPrice() { } public static ChildrensPrice getInstance() { return PRICE; } public int getPriceCode() { return Movie.CHILDRENS; } public double getCharge(int daysRented) { double result = 1.5; if(daysRented > 3) { result+= (daysRented-3)*1.5; } return result; } }