refactor: UrlMapper 인스턴스 변수에 final 키워드 추가

woowacourse · YejiAhn · Nov 9, 2020 · Nov 9, 2020 · Nov 9, 2020 · Nov 10, 2020
commit ecd47baef229b0c60e0fe560c57ff28c5a8207ba
diff --git a/src/main/java/web/application/UrlMapper.java b/src/main/java/web/application/UrlMapper.java
@@ -11,7 +11,7 @@
 
 public class UrlMapper {
 
-    private Map<String, Controller> mapper;
+    private final Map<String, Controller> mapper;
 
     public UrlMapper() {
         this.mapper = new HashMap<>();