Merge pull request #56 from jiwon83/main

한지원 - 디자인 패턴 - 프록시  예제 코드

241020/proxy/demo/src/main/java/com/example/demo/proxy/BubbleMiniGame.java

@@ -0,0 +1,35 @@
+package com.example.demo.proxy;
+
+public class BubbleMiniGame implements CanMiniGame {
+
+    private String userName;
+
+    public BubbleMiniGame() {
+        initialWork();
+    }
+
+    private void initialWork() {
+        try {
+            Thread.sleep(1000);
+            System.out.println("Bubble 미니 게임 초기화 작업이 완료됐습니다.");
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+
+    @Override
+    public void welcomeMessage() {
+        System.out.println(userName+ "님, Bubble 미니 게임에 오신 것을 환영합니다 : ) ");
+    }
+
+    @Override
+    public void playGame() {
+        System.out.println("Bubble 미니 게임을 시작합니다.");
+    }
+}

241020/proxy/demo/src/main/java/com/example/demo/proxy/CanMiniGame.java

@@ -0,0 +1,10 @@
+package com.example.demo.proxy;
+
+public interface CanMiniGame {
+
+    void setUserName(String userName);
+
+    void welcomeMessage();
+
+    void playGame();
+}

241020/proxy/demo/src/main/java/com/example/demo/proxy/MarioMiniGame.java

@@ -0,0 +1,36 @@
+package com.example.demo.proxy;
+
+public class MarioMiniGame implements CanMiniGame {
+
+    private String userName;
+
+    public MarioMiniGame() {
+        initialWork();
+    }
+
+    private void initialWork() {
+        try {
+            System.out.println("Mario 미니 게임 초기화 작업은 조금 더 오래 걸립니다. 조금만 기다려 주세요!");
+            Thread.sleep(20000);
+            System.out.println("Mario 미니 게임 초기화 작업이 완료됐습니다.");
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+
+    @Override
+    public void welcomeMessage() {
+        System.out.println(userName+ "님, Mario 미니 게임에 오신 것을 환영합니다 : ) ");
+    }
+
+    @Override
+    public void playGame() {
+        System.out.println("Mario 미니 게임을 시작합니다.");
+    }
+}

241020/proxy/demo/src/main/java/com/example/demo/proxy/MiniGame.java

@@ -0,0 +1,39 @@
+package com.example.demo.proxy;
+
+public class MiniGame implements CanMiniGame {
+
+    private String userName;
+
+    public MiniGame() {
+        initialWork();
+    }
+    public MiniGame(String userName) {
+        this.userName = userName;
+        initialWork();
+    }
+
+    private void initialWork() {
+        try {
+            Thread.sleep(3000);
+            System.out.println("MiniGame 초기화 작업이 완료됐습니다.");
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+
+    @Override
+    public void welcomeMessage() {
+        System.out.println(userName+ "님, MiniGame 에 오신 것을 환영합니다 : ) ");
+    }
+
+    @Override
+    public void playGame() {
+        System.out.println("START!!");
+    }
+}

241020/proxy/demo/src/main/java/com/example/demo/proxy/MiniGameProxy.java

@@ -0,0 +1,48 @@
+package com.example.demo.proxy;
+
+import java.lang.reflect.InvocationTargetException;
+
+public class MiniGameProxy implements CanMiniGame {
+
+//    private MiniGame realMiniGame;
+    private CanMiniGame realMiniGame;
+    private String className; // Real MiniGame 객체의 클래스 이름
+    private String userName;
+
+    public MiniGameProxy(String className) {
+        this.realMiniGame = null; // 객체 생성을 지연
+        this.className = className;
+        this.userName = "null";
+    }
+
+    @Override
+    public void setUserName(String userName) {
+        if (realMiniGame == null) {
+            this.userName = userName;
+        }else{
+            realMiniGame.setUserName(userName);
+        }
+    }
+
+    @Override
+    public void welcomeMessage() {
+        if (realMiniGame == null){
+            System.out.println(userName+ "님, "+ className + " 에 오신 것을 환영합니다 : ) ");
+        }else{
+            realMiniGame.welcomeMessage();
+        }
+    }
+
+    @Override
+    public void playGame() {
+        if (realMiniGame == null){
+            try {
+                realMiniGame = (CanMiniGame) Class.forName("com.example.demo.proxy."+ className).getDeclaredConstructor().newInstance();
+            } catch (ClassNotFoundException | NoSuchMethodException | InstantiationException | IllegalAccessException |
+                     InvocationTargetException e) {
+                throw new RuntimeException(e);
+            }
+        }
+        realMiniGame.playGame();
+    }
+}

241020/proxy/demo/src/main/java/com/example/demo/proxy/PuzzleMiniGame.java

@@ -0,0 +1,35 @@
+package com.example.demo.proxy;
+
+public class PuzzleMiniGame implements CanMiniGame{
+
+    private String userName;
+
+    public PuzzleMiniGame() {
+        initialWork();
+    }
+
+    private void initialWork() {
+        try {
+            Thread.sleep(500);
+            System.out.println("Puzzle 미니 게임 초기화 작업이 완료됐습니다.");
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+
+    @Override
+    public void welcomeMessage() {
+        System.out.println(userName+ "님, Puzzle 미니 게임에 오신 것을 환영합니다 : ) ");
+    }
+
+    @Override
+    public void playGame() {
+        System.out.println("Puzzle 미니 게임을 시작합니다.");
+    }
+}

241020/proxy/demo/src/test/java/com/example/demo/proxy/MiniGameProxyTest.java

@@ -0,0 +1,48 @@
+package com.example.demo.proxy;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class MiniGameProxyTest {
+
+    @Test
+    void miniGameTestProxy(){
+        CanMiniGame miniGame = new MiniGameProxy("MiniGame");
+        miniGame.setUserName("쥴리"); // 실제 객체는 생성되지 않았다.
+        miniGame.welcomeMessage();
+
+        // 사용자 입력에 따라 게임 실행
+        String userInput = "start";
+
+        if ("start".equals(userInput)) {
+            miniGame.playGame();
+        }
+    }
+
+    @Test
+    void onlyWelcomeProxy(){
+        CanMiniGame miniGame = new MiniGameProxy("MiniGame");
+        miniGame.setUserName("쥴리"); // 실제 객체는 생성되지 않았다.
+        miniGame.welcomeMessage();
+    }
+
+    @Test
+    void proxyTestWhenVariousMiniGame(){
+        CanMiniGame miniGame = new MiniGameProxy("PuzzleMiniGame");
+        miniGame.setUserName("쥴리"); // 실제 객체는 생성되지 않았다.
+        miniGame.welcomeMessage();
+        miniGame.playGame();
+
+        CanMiniGame miniGame2 = new MiniGameProxy("BubbleMiniGame");
+        miniGame2.setUserName("나띠"); // 실제 객체는 생성되지 않았다.
+        miniGame2.welcomeMessage();
+        miniGame2.playGame();
+
+        CanMiniGame miniGame3 = new MiniGameProxy("MarioMiniGame");
+        miniGame3.setUserName("벨"); // 실제 객체는 생성되지 않았다.
+        miniGame3.welcomeMessage();
+        miniGame3.playGame();
+    }
+
+}

241020/proxy/demo/src/test/java/com/example/demo/proxy/MiniGameTest.java

@@ -0,0 +1,30 @@
+package com.example.demo.proxy;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class MiniGameTest {
+
+    @Test
+    void gameTest(){
+
+        MiniGame miniGame = new MiniGame();
+        miniGame.setUserName("쥴리");
+        miniGame.welcomeMessage();
+
+        // 사용자 입력에 따라 게임 실행
+        String userInput = "start";
+
+        if ("start".equals(userInput)) {
+            miniGame.playGame();
+        }
+    }
+
+    @Test
+    void onlyWelcomeProxy(){
+        CanMiniGame miniGame = new MiniGame();
+        miniGame.setUserName("쥴리"); // 실제 객체는 생성되지 않았다.
+        miniGame.welcomeMessage();
+    }
+}