[문종운] 프로토타입 패턴 구현

chapter1/jongwoon/strategy/src/adventureGame/GameSimulator.java

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+package adventureGame;
+
+import adventureGame.domain.character.Character;
+import adventureGame.domain.character.King;
+import adventureGame.domain.character.Queen;
+import adventureGame.domain.weapon.BowAndArrowBehavior;
+
+public class GameSimulator {
+    public static void main(String[] args) {
+        Character king = new King();
+        Character queen = new Queen();
+        king.fight(queen);
+
+        king.changeWeapon(new BowAndArrowBehavior());
+        king.fight(queen);
+        queen.fight(king);
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/character/Character.java

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+package adventureGame.domain.character;
+
+import adventureGame.domain.weapon.WeaponBehavior;
+
+public abstract class Character {
+    String name;
+    WeaponBehavior weapon;
+
+    public void fight(Character character) {
+        System.out.println(name + "이 무기를 사용하여 공격하였습니다.");
+        weapon.useWeapon();
+        character.attacked();
+    }
+
+    public void changeWeapon(WeaponBehavior weapon) {
+        System.out.println(name + "이 무기를 교체하였습니다.");
+        this.weapon = weapon;
+    }
+
+    private void attacked() {
+        System.out.println(name + "이 피해를 입었습니다.");
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/character/King.java

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+package adventureGame.domain.character;
+
+import adventureGame.domain.weapon.SwordBehavior;
+
+public class King extends Character {
+
+    public King() {
+        name = "king";
+        weapon = new SwordBehavior();
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/character/Knight.java

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+package adventureGame.domain.character;
+
+import adventureGame.domain.weapon.BowAndArrowBehavior;
+
+public class Knight extends Character {
+    public Knight() {
+        name = "knight";
+        weapon = new BowAndArrowBehavior();
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/character/Queen.java

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+package adventureGame.domain.character;
+
+import adventureGame.domain.weapon.KnifeBehavior;
+
+public class Queen extends Character {
+
+    public Queen() {
+        name = "queen";
+        weapon = new KnifeBehavior();
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/character/Troll.java

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+package adventureGame.domain.character;
+
+import adventureGame.domain.weapon.AxeBehavior;
+
+public class Troll extends Character {
+
+    public Troll() {
+        name = "troll";
+        weapon = new AxeBehavior();
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/weapon/AxeBehavior.java

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+package adventureGame.domain.weapon;
+
+public class AxeBehavior implements WeaponBehavior {
+    @Override
+    public void useWeapon() {
+        System.out.println("도끼로 내려찍기!");
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/weapon/BowAndArrowBehavior.java

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+package adventureGame.domain.weapon;
+
+public class BowAndArrowBehavior implements WeaponBehavior {
+    @Override
+    public void useWeapon() {
+        System.out.println("활 쏘기!");
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/weapon/KnifeBehavior.java

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+package adventureGame.domain.weapon;
+
+public class KnifeBehavior implements WeaponBehavior {
+    @Override
+    public void useWeapon() {
+        System.out.println("칼로 찌르기!");
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/weapon/SwordBehavior.java

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+package adventureGame.domain.weapon;
+
+public class SwordBehavior implements WeaponBehavior {
+    @Override
+    public void useWeapon() {
+        System.out.println("칼로 베기!");
+    }
+}

chapter1/jongwoon/strategy/src/adventureGame/domain/weapon/WeaponBehavior.java

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+package adventureGame.domain.weapon;
+
+public interface WeaponBehavior {
+    void useWeapon();
+}

chapter1/jongwoon/strategy/strategy.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

chapter2/chapter2.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/jongwoon/src/main/java" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

chapter2/jongwoon/src/main/java/Main.java

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+import observer.Observer;
+import observer.ObserverConcrete;
+import subject.Subject;
+import subject.SubjectConcrete;
+
+public class Main {
+    public static void main(String[] args) {
+        Subject subject = new SubjectConcrete();
+        Observer observer1 = new ObserverConcrete("관찰자 1");
+        Observer observer2 = new ObserverConcrete("관찰자 2");
+        subject.addObserver(observer1);
+        subject.addObserver(observer2);
+
+        subject.notifyObservers();
+    }
+}

chapter2/jongwoon/src/main/java/observer/Observer.java

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+package observer;
+
+public interface Observer {
+    void update();
+}

chapter2/jongwoon/src/main/java/observer/ObserverConcrete.java

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+package observer;
+
+public class ObserverConcrete implements Observer {
+
+    String name;
+
+    public ObserverConcrete(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public void update() {
+        System.out.println(name + "에게 발송 되었습니다.");
+    }
+}

chapter2/jongwoon/src/main/java/stock/StockApp.java

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+package stock;
+
+import stock.observer.Customer;
+import stock.observer.StockCustomer;
+import stock.stocks.repository.StocksRepository;
+import stock.subject.Brokerage;
+import stock.subject.SamsungBrokerage;
+
+public class StockApp {
+    public static void main(String[] args) {
+        Brokerage brokerage = new SamsungBrokerage();
+        StockCustomer customer1 = new Customer("김봉팔");
+        StockCustomer customer2 = new Customer("김사지");
+        customer1.addStocks(StocksRepository.STOCKS_MAP.get("Kakao"));
+        customer1.addStocks(StocksRepository.STOCKS_MAP.get("Samsung"));
+
+        customer2.addStocks(StocksRepository.STOCKS_MAP.get("Kakao"));
+        customer2.addStocks(StocksRepository.STOCKS_MAP.get("Samsung"));
+        customer2.addStocks(StocksRepository.STOCKS_MAP.get("Tesla"));
+
+        brokerage.addCustomer(customer1);
+        brokerage.addCustomer(customer2);
+        brokerage.notifyToCustomer();
+    }
+}

chapter2/jongwoon/src/main/java/stock/observer/Customer.java

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+package stock.observer;
+
+import stock.stocks.Stocks;
+
+public class Customer extends StockCustomer {
+
+    public Customer(String customerName) {
+        super(customerName);
+    }
+
+    @Override
+    public void update() {
+        System.out.println(customerName + "의 포트폴리오");
+        for (Stocks stock : stockList) {
+            System.out.println(stock);
+        }
+    }
+}

chapter2/jongwoon/src/main/java/stock/observer/StockCustomer.java

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+package stock.observer;
+
+import stock.stocks.Stocks;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class StockCustomer {
+    String customerName;
+    List<Stocks> stockList = new ArrayList<>();
+
+    public StockCustomer(String customerName) {
+        this.customerName = customerName;
+    }
+
+    public abstract void update();
+
+    public void addStocks(Stocks stocks) {
+        stockList.add(stocks);
+    }
+}

chapter2/jongwoon/src/main/java/stock/stocks/Kakao.java

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+package stock.stocks;
+
+import java.math.BigDecimal;
+
+public class Kakao extends Stocks {
+    public Kakao(BigDecimal stockPrice) {
+        super(stockPrice);
+        stockName = "카카오 주식";
+    }
+}

chapter2/jongwoon/src/main/java/stock/stocks/Samsung.java

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+package stock.stocks;
+
+import java.math.BigDecimal;
+
+public class Samsung extends Stocks {
+    public Samsung(BigDecimal stockPrice) {
+        super(stockPrice);
+        stockName = "삼성 주식";
+    }
+}

chapter2/jongwoon/src/main/java/stock/stocks/Stocks.java

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+package stock.stocks;
+
+import java.math.BigDecimal;
+import java.util.Random;
+
+public abstract class Stocks {
+    protected String stockName;
+    protected BigDecimal stockPrice;
+
+    public Stocks(BigDecimal stockPrice) {
+        this.stockPrice = stockPrice;
+    }
+
+    public void changeStockPrice() {
+        int randomMenu = new Random().nextInt(2) + 1;
+        int dollar = new Random().nextInt(2);
+        switch (randomMenu) {
+            case 1:
+                BigDecimal addMoney = BigDecimal.valueOf(new Random().nextDouble() + dollar);
+                stockPrice = stockPrice.add(addMoney);
+                break;
+            case 2:
+                BigDecimal subtractMoney = BigDecimal.valueOf(new Random().nextDouble() + dollar);
+                stockPrice = stockPrice.subtract(subtractMoney);
+                break;
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "Stocks{" +
+                "stockName='" + stockName + '\'' +
+                ", stockPrice=" + Math.round(stockPrice.doubleValue() * 100) / 100.0 +
+                '}';
+    }
+}

chapter2/jongwoon/src/main/java/stock/stocks/Tesla.java

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+package stock.stocks;
+
+import java.math.BigDecimal;
+
+public class Tesla extends Stocks {
+    public Tesla(BigDecimal stockPrice) {
+        super(stockPrice);
+        stockName = "테슬라 주식";
+    }
+}

chapter2/jongwoon/src/main/java/stock/stocks/repository/StocksRepository.java

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+package stock.stocks.repository;
+
+import stock.stocks.Kakao;
+import stock.stocks.Samsung;
+import stock.stocks.Stocks;
+import stock.stocks.Tesla;
+
+import java.math.BigDecimal;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+public class StocksRepository {
+    public static final Map<String, Stocks> STOCKS_MAP = new LinkedHashMap<>();
+
+    static {
+        STOCKS_MAP.put("Kakao", new Kakao(new BigDecimal("43.8")));
+        STOCKS_MAP.put("Samsung", new Samsung(new BigDecimal("55.91")));
+        STOCKS_MAP.put("Tesla", new Tesla(new BigDecimal("244.4")));
+
+        STOCKS_MAP.forEach((a, b) -> {
+            System.out.println(a + "의 첫 주가 : " + b);
+        });
+    }
+}

chapter2/jongwoon/src/main/java/stock/subject/Brokerage.java

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+package stock.subject;
+
+import stock.observer.StockCustomer;
+
+public interface Brokerage {
+    void addCustomer(StockCustomer customer);
+
+    void removeCustomer(StockCustomer customer);
+
+    void notifyToCustomer();
+}