refactor: Strategy 인터페이스 -> CalculatorStrategy 로 이름 변경

Author: wonu606

calculator/src/main/java/com/wonu606/calculator/CalculatorApp.java

@@ -3,7 +3,7 @@
 import com.wonu606.app.App;
 import com.wonu606.calculator.storage.Persistence;
 import com.wonu606.calculator.storage.ResultStore;
-import com.wonu606.calculator.strategy.Strategy;
+import com.wonu606.calculator.strategy.CalculatorStrategy;
 import com.wonu606.io.Input;
 import com.wonu606.io.Print;
 import com.wonu606.util.Message;
@@ -14,7 +14,7 @@
 
 public class CalculatorApp implements App {
 
-    private final List<Strategy> strategies = new ArrayList<>();
+    private final List<CalculatorStrategy> strategies = new ArrayList<>();
     private final Persistence store = new ResultStore();
     Input input;
     Print printer;
@@ -30,16 +30,16 @@ private void initStrategies() {
     public void execute(Input input, Print printer) throws IOException {
         this.input = input;
         this.printer = printer;
-
+        
         while (true) {
             int selection = Integer.parseInt(input.getInput());
 
-            Optional<Strategy> selectedStrategy =
+            Optional<CalculatorStrategy> selectedStrategy =
                     Optional.ofNullable(strategies.get(selection - 1));
             selectedStrategy.ifPresentOrElse(
                     strategy -> strategy.execute(input, printer, store),
                     () -> {
-                        throw new IllegalArgumentException("잘못된 입력입니다.");
+                        throw new IllegalArgumentException(Message.INVALID_INPUT);
                     });
         }
     }

calculator/src/main/java/com/wonu606/calculator/strategy/Strategy.java renamed to calculator/src/main/java/com/wonu606/calculator/strategy/CalculatorStrategy.java

@@ -4,7 +4,7 @@
 import com.wonu606.io.Input;
 import com.wonu606.io.Print;
 
-public interface Strategy {
+public interface CalculatorStrategy {
 
     void execute(Input input, Print printer, Persistence store);
 }

calculator/src/main/java/com/wonu606/util/Message.java

@@ -3,4 +3,5 @@
 public abstract class Message {
     public static final String INVALID_ORDER = "잘못된 순번입니다.";
     public static final String INVALID_NUMBER = "잘못된 번호입니다.";
+    public static final String INVALID_INPUT = "잘못된 입력입니다.";
 }