[한승원] 추상팩토리패턴 & 싱글톤

chapter1/seungwon/strategyPattern/ActionAdventureSimulator.java

@@ -0,0 +1,13 @@
+import behavior.AxeBehavior;
+import character.Character;
+import character.Queen;
+
+public class ActionAdventureSimulator {
+    public static void main(String[] args) {
+        Character userCharacter = new Queen();
+        userCharacter.fight();
+
+        userCharacter.setWeapon(new AxeBehavior());
+        userCharacter.fight();
+    }
+}

chapter1/seungwon/strategyPattern/behavior/AxeBehavior.java

@@ -0,0 +1,8 @@
+package behavior;
+
+public class AxeBehavior implements WeaponBehavior {
+    @Override
+    public void useWeapon() {
+        System.out.println("공격 - 도끼로 찍어버리기");
+    }
+}

chapter1/seungwon/strategyPattern/behavior/BowAndArrowBehavior.java

@@ -0,0 +1,8 @@
+package behavior;
+
+public class BowAndArrowBehavior implements WeaponBehavior {
+    @Override
+    public void useWeapon() {
+        System.out.println("공격 - 화살쏘기");
+    }
+}

chapter1/seungwon/strategyPattern/behavior/KnifeBehavior.java

@@ -0,0 +1,8 @@
+package behavior;
+
+public class KnifeBehavior implements WeaponBehavior {
+    @Override
+    public void useWeapon() {
+        System.out.println("공격 - 칼로 베기");
+    }
+}

chapter1/seungwon/strategyPattern/behavior/SwordBehavior.java

@@ -0,0 +1,8 @@
+package behavior;
+
+public class SwordBehavior implements WeaponBehavior {
+    @Override
+    public void useWeapon() {
+        System.out.println("공격 - 검 휘두르기!");
+    }
+}

chapter1/byeonggon/design_puzzle/behavior/WeaponBehavior.java → chapter1/seungwon/strategyPattern/behavior/WeaponBehavior.java

@@ -1,5 +1,5 @@
-package chapter1.behavior;
+package behavior;
 
 public interface WeaponBehavior {
     void useWeapon();
-}
+}

chapter1/seungwon/strategyPattern/character/Character.java

@@ -0,0 +1,14 @@
+package character;
+
+import behavior.WeaponBehavior;
+
+public abstract class Character {
+    WeaponBehavior weapon;
+
+    public abstract void fight();
+
+    public void setWeapon(WeaponBehavior w) {
+        this.weapon = w;
+    }
+
+}

chapter1/seungwon/strategyPattern/character/King.java

@@ -0,0 +1,14 @@
+package character;
+
+import behavior.KnifeBehavior;
+
+public class King extends Character {
+    public King(){
+        setWeapon(new KnifeBehavior());
+    }
+    @Override
+    public void fight() {
+        System.out.println("공격 개시 - King");
+        weapon.useWeapon();
+    }
+}

chapter1/seungwon/strategyPattern/character/Knight.java

@@ -0,0 +1,14 @@
+package character;
+
+import behavior.SwordBehavior;
+
+public class Knight extends Character {
+    public Knight(){
+        setWeapon(new SwordBehavior());
+    }
+    @Override
+    public void fight() {
+        System.out.println("공격 개시 - Knight");
+        weapon.useWeapon();
+    }
+}

chapter1/seungwon/strategyPattern/character/Queen.java

@@ -0,0 +1,14 @@
+package character;
+
+import behavior.BowAndArrowBehavior;
+
+public class Queen extends Character {
+    public Queen(){
+        setWeapon(new BowAndArrowBehavior());
+    }
+    @Override
+    public void fight() {
+        System.out.println("공격 개시 - Queen");
+        weapon.useWeapon();
+    }
+}

chapter1/seungwon/strategyPattern/character/Troll.java

@@ -0,0 +1,14 @@
+package character;
+
+import behavior.AxeBehavior;
+
+public class Troll extends Character {
+    public Troll(){
+        setWeapon(new AxeBehavior());
+    }
+    @Override
+    public void fight() {
+        System.out.println("공격 개시 - Troll");
+        weapon.useWeapon();
+    }
+}

chapter2/seungwon/observerPattern/Observer/Observer.java

@@ -0,0 +1,5 @@
+package tmp.observerPattern;
+
+public interface Observer {
+	public void update();
+}

chapter2/seungwon/observerPattern/Observer/Subsribers.java

@@ -0,0 +1,27 @@
+package tmp.observerPattern;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class Subsribers implements Observer {
+	private final String name;
+	private final List<StockCompany> subscribingCompanies = new ArrayList<>();
+	private final Map<String, Double> dailyQuoteByCompany = new HashMap<String, Double>();
+
+	public Subsribers(String name) {
+		this.name = name;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	@Override
+	public void update() {
+		for(StockCompany company:subscribingCompanies){
+			dailyQuoteByCompany.put(company.code, company.getDailyQuote());
+		}
+	}
+}

chapter2/seungwon/observerPattern/Subject/StockCompany.java

@@ -0,0 +1,41 @@
+package tmp.observerPattern;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class StockCompany implements Subject {
+	public final String code;
+	private final List<Double> dailyQuotes = new ArrayList<>();
+	private final List<Observer> observers = new ArrayList<>();
+
+	public StockCompany(String code) {
+		this.code = code;
+	}
+
+	@Override
+	public void notifyObservers() {
+		for (Observer observer : observers) {
+			observer.update();
+		}
+	}
+
+	@Override
+	public void registerObserver(Observer observer) {
+		observers.add(observer);
+	}
+
+	@Override
+	public void removeObserver(Observer observer) {
+		observers.remove(observer);
+	}
+
+	public Double getDailyQuote() {
+		int recentIdx = dailyQuotes.size() - 1;
+		return dailyQuotes.get(recentIdx);
+	}
+
+	public void updateDailyQuote(Double dailyQuote) {
+		dailyQuotes.add(dailyQuote);
+		notifyObservers();
+	}
+}

chapter2/seungwon/observerPattern/Subject/Subject.java

@@ -0,0 +1,9 @@
+package tmp.observerPattern;
+
+public interface Subject {
+	void notifyObservers();
+
+	void registerObserver(Observer observer);
+
+	void removeObserver(Observer observer);
+}

chapter3/seungwon/decoratorPattern/DataProcessor.java

@@ -0,0 +1,9 @@
+package tmp.decoratorPattern;
+
+public interface DataProcessor {
+	String getData();
+
+	void setData(String data);
+
+	void process();
+}

chapter3/seungwon/decoratorPattern/Decryptor.java

@@ -0,0 +1,34 @@
+package tmp.decoratorPattern;
+
+public class Decryptor implements DataProcessor {
+	private final DataProcessor dataProcessor;
+
+	public Decryptor(DataProcessor dataProcessor) {
+		this.dataProcessor = dataProcessor;
+	}
+
+	@Override
+	public void process() {
+		dataProcessor.process();
+		decryptData();
+	}
+
+	private void decryptData() {
+		String data = dataProcessor.getData();
+		StringBuilder decryptedData = new StringBuilder();
+		for (int i = data.length() - 1; i >= 0; i--) {
+			decryptedData.append(data.charAt(i));
+		}
+		dataProcessor.setData(decryptedData.toString());
+	}
+
+	@Override
+	public String getData() {
+		return dataProcessor.getData();
+	}
+
+	@Override
+	public void setData(String data) {
+		dataProcessor.setData(data);
+	}
+}