Head Firstデザインパターン 第2版 ―頭とからだで覚えるデザインパターンの基本

public class StarbuzzCoffee {

public static void main(String[] args) {

Beverage beverage = new Espresso();

System.out.println(beverage.getDescription()

+ " $" + beverage.cost());

Beverage beverage2 = new DarkRoast();

beverage2 = new Mocha(beverage2);

beverage2 = new Mocha(beverage2);

beverage2 = new Whip(beverage2);

System.out.println(beverage2.getDescription()

+ " $" + beverage2.cost());

Beverage beverage3 = new HouseBlend();

beverage3 = new Soy(beverage3);

beverage3 = new Mocha(beverage3);

beverage3 = new Whip(beverage3);

System.out.println(beverage3.getDescription()

+ " $" + beverage3.cost());

}

}

コーヒーを提供する

% Java StarbuzzCoffee

エスプレッソ

$1.99 ...