[유원우] 추상팩토리패턴 & 싱글톤을 이용한 GUI OS 과제 구현

AbstractFactory-And-Singleton/src/App.java

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+import button.Button;
+import checkbox.Checkbox;
+import factory.GUIFactory;
+
+public class App {
+
+    private Button button;
+    private Checkbox checkbox;
+
+    public App(GUIFactory factory) {
+        this.button = factory.createButton();
+        this.checkbox = factory.createCheckbox();
+    }
+
+    public void paint() {
+        button.paint();
+        checkbox.paint();
+    }
+}

AbstractFactory-And-Singleton/src/Main.java

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+import factory.GUIFactory;
+import factory.MacOSFactory;
+import factory.WindowsFactory;
+import java.util.Scanner;
+
+public class Main {
+
+    private static GUIFactory macOSFactory = new MacOSFactory();
+    private static GUIFactory windowsFactory = new WindowsFactory();
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        String osKorean = scanner.nextLine();
+        GUIFactory guiFactory = getOS(osKorean);
+        if (!validOS(guiFactory)) {
+            return;
+        }
+
+        App app = new App(guiFactory);
+        app.paint();
+
+        scanner.close();
+    }
+
+    private static boolean validOS(GUIFactory guiFactory) {
+        if (guiFactory == null) {
+            System.out.println("그런 OS는 존재하지 않습니다.");
+            return false;
+        }
+        return true;
+    }
+
+    private static GUIFactory getOS(String osKorean) {
+        switch (osKorean) {
+            case "맥":
+                return macOSFactory;
+            case "윈도우":
+                return windowsFactory;
+            default:
+                return null;
+        }
+    }
+}

AbstractFactory-And-Singleton/src/button/Button.java

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+package button;
+
+public interface Button {
+    void paint();
+}

AbstractFactory-And-Singleton/src/button/MacOSButton.java

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+package button;
+
+public class MacOSButton implements Button {
+
+    @Override
+    public void paint() {
+        System.out.println("[맥 마우스] 생성됨");
+    }
+}

AbstractFactory-And-Singleton/src/button/WindowButton.java

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+package button;
+
+public class WindowButton implements Button {
+
+    @Override
+    public void paint() {
+        System.out.println("[윈도우 버튼] 생성됨");
+    }
+}

AbstractFactory-And-Singleton/src/checkbox/Checkbox.java

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+package checkbox;
+
+public interface Checkbox {
+
+    void paint();
+}

AbstractFactory-And-Singleton/src/checkbox/MacOSCheckbox.java

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+package checkbox;
+
+public class MacOSCheckbox implements Checkbox {
+
+    @Override
+    public void paint() {
+        System.out.println("[맥 체크박스] 생성됨");
+    }
+}

AbstractFactory-And-Singleton/src/checkbox/WindowCheckbox.java

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+package checkbox;
+
+public class WindowCheckbox implements Checkbox {
+
+    @Override
+    public void paint() {
+        System.out.println("[윈도우 체크박스] 생성됨");
+    }
+}

AbstractFactory-And-Singleton/src/factory/GUIFactory.java

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+package factory;
+
+import checkbox.Checkbox;
+import button.Button;
+
+public interface GUIFactory {
+
+    Button createButton();
+
+    Checkbox createCheckbox();
+}

AbstractFactory-And-Singleton/src/factory/MacOSFactory.java

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+package factory;
+
+import button.MacOSButton;
+import checkbox.Checkbox;
+import button.Button;
+import checkbox.MacOSCheckbox;
+
+public class MacOSFactory implements GUIFactory {
+
+    @Override
+    public Button createButton() {
+        return new MacOSButton();
+    }
+
+    @Override
+    public Checkbox createCheckbox() {
+        return new MacOSCheckbox();
+    }
+}

AbstractFactory-And-Singleton/src/factory/WindowsFactory.java

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+package factory;
+
+import button.WindowButton;
+import checkbox.Checkbox;
+import button.Button;
+import checkbox.WindowCheckbox;
+
+public class WindowsFactory implements GUIFactory {
+
+    @Override
+    public Button createButton() {
+        return new WindowButton();
+    }
+
+    @Override
+    public Checkbox createCheckbox() {
+        return new WindowCheckbox();
+    }
+}