[Java] 12. 상속_5.Composition (Ex.Burger)

java-lec-study/src/ex06/example7 at master · kdit-2024/java-lec-study

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https://github.com/kdit-2024/java-lec-study/tree/master/src/ex06/example7

package comp;

// 기본 버거
public class Burger {
    private String name;
    private int price;

    // 상태 초기화는 생성자로
    public Burger(String name, int price) {
        this.name = name;
        this.price = price;
        System.out.println(name + " 만들어졌어요");
    }

    public String getName() {
        return name;
    }

    public int getPrice() {
        return price;
    }


}

package comp;

public class Coke {
    private String name;
    private int price;

    public Coke(String name, int price) {
        this.name = name;
        this.price = price;
        System.out.println(name + " 만들어졌어요");
    }

    public String getName() {
        return name;
    }

    public int getPrice() {
        return price;
    }
}

package comp;

public class ShrimpBurger extends Burger {
    private String material; // 재료

    public ShrimpBurger(String name, int price, String material) {
        super(name, price);
        this.material = material;
        System.out.println(name + " 만들어졌어요");
    }

    public String getMaterial() {
        return material;
    }
}

package comp;

// DI (has)
public class BurgerSet {
    private final Burger burger;
    private final Coke coke;

    public BurgerSet(Burger burger, Coke coke) {
        this.burger = burger;
        this.coke = coke;
    }

    public Burger getBurger() {
        return burger;
    }

    public Coke getCoke() {
        return coke;
    }

    // 사용자를 위한 getter 만들어 봅시다.
    public int getTotalPrice() {
        return burger.getPrice() + coke.getPrice();
    }

    public String getAllNames() {
        return burger.getName() + " " + coke.getName();
    }
}

package comp;

public class LotteApp {
    public static void main(String[] args) {
        // 1. 버거만 주세요 (1000, 버거)
        Burger burger = new Burger("버거", 1000);

        // 2. 콜라만 주세요 (500, 콜라)
        Coke coke = new Coke("콜라", 500);

        // 3. 쉬림프 버거 주세요 (새우, 2000, 새우버거)
        ShrimpBurger shrimpBurger = new ShrimpBurger("새우버거", 2000, "새우");

        // 4. 버거 세트 주세요
        Burger burger1 = new Burger("버거", 1000);
        Coke coke1 = new Coke("콜라", 500);
        BurgerSet burgerSet = new BurgerSet(burger, coke);
        System.out.println(burgerSet.getAllNames());
        System.out.println(burgerSet.getTotalPrice());


    }
}

C:\workspace\tools\jdk-21\bin\java.exe "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2024.3.2.1\lib\idea_rt.jar=53512:C:\Program Files\JetBrains\IntelliJ IDEA 2024.3.2.1\bin" -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.stderr.encoding=UTF-8 -classpath C:\workspace\java_lec\study\out\production\study comp.LotteApp
버거 만들어졌어요
콜라 만들어졌어요
새우버거 만들어졌어요
새우버거 만들어졌어요
버거 만들어졌어요
콜라 만들어졌어요
버거 콜라
1500

Process finished with exit code 0