Refactoring for kickstarters- Lazy Class 2

Code Smell of the year

Take care of lazy subclasses too.

public abstract class Address {

    private final String house;
    private final String street;
    private final String city;
    private final String postcode;
    private final String country;

    public Address (String house, String street, String city,
                    String country, String postcode){
        this.house = house;
        this.street = street;
        this.city = city;
        this.postcode = postcode;
        this.country = country;
    }

    public String getAddressSummary(){
        return house + ", " + street + ", " + city + ", " + postcode.getPostcode() +
                ", " + country;
    }

}


public class ShippingAddress extends Address {

    public ShippingAddress(String house, String street, String city, String country, String postcode){
        super(house, street, city, country, postcode);
    }

    public double calculatePostage(){
        return country == "United Kingdom" ? 3 : 6;
    }
}

You can fork it here from Github.

This is step seven of the second part of the Refactoring kickstart beginner series. Here is step 8.