diff --git a/.DS_Store b/.DS_Store
index 66910be..e6a2c69 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/carApp/.DS_Store b/carApp/.DS_Store
index c776dac..6a43260 100644
Binary files a/carApp/.DS_Store and b/carApp/.DS_Store differ
diff --git a/junit5-jupiter-starter-gradle/.DS_Store b/junit5-jupiter-starter-gradle/.DS_Store
index 9dceb80..b4157b6 100644
Binary files a/junit5-jupiter-starter-gradle/.DS_Store and b/junit5-jupiter-starter-gradle/.DS_Store differ
diff --git a/tutoRefactoring/.DS_Store b/tutoRefactoring/.DS_Store
index ea8f413..54be7bf 100644
Binary files a/tutoRefactoring/.DS_Store and b/tutoRefactoring/.DS_Store differ
diff --git a/tutoRefactoring/src/.DS_Store b/tutoRefactoring/src/.DS_Store
index b12f419..4ddab83 100644
Binary files a/tutoRefactoring/src/.DS_Store and b/tutoRefactoring/src/.DS_Store differ
diff --git a/tutoRefactoring/src/main/java/DateUtils.java b/tutoRefactoring/src/main/java/DateUtils.java
new file mode 100644
index 0000000..26a0ce5
--- /dev/null
+++ b/tutoRefactoring/src/main/java/DateUtils.java
@@ -0,0 +1,14 @@
+import java.time.LocalDate;
+
+public class DateUtils {
+    public static boolean isNowBetween(LocalDate startingDate, LocalDate endingDate) {
+        LocalDate now = LocalDate.now();
+        return isaBoolean(startingDate, endingDate, now);
+    }
+
+    private static boolean isaBoolean(LocalDate startingDate, LocalDate endingDate, LocalDate now) {
+        return now.isAfter(startingDate)
+                &&
+                now.isBefore(endingDate);
+    }
+}
\ No newline at end of file
diff --git a/tutoRefactoring/src/main/java/SimpleClass.java b/tutoRefactoring/src/main/java/SimpleClass.java
index b8ada5e..0ae42d9 100644
--- a/tutoRefactoring/src/main/java/SimpleClass.java
+++ b/tutoRefactoring/src/main/java/SimpleClass.java
@@ -1,33 +1,33 @@
 import java.time.LocalDate;
-import java.util.Locale;
 
 public class SimpleClass {
 
     public SimpleClass() {
     }
 
+    public static void main(String[] args) {
+        new SimpleClass().add(1, 2);
+
+        System.out.println("Hello world");
+    }
+
+    public static boolean isNowBetween(LocalDate startingDate, LocalDate endingDate) {
+        LocalDate now = LocalDate.now();
+        return (now.isAfter(startingDate)
+                &&
+                now.isBefore(endingDate)
+        );
+    }
+
     /**
      * Additionne a et b
      * @param a - premier paramètre
      * @param b - second paramètre
      * @return
      */
-    public int someAdditionMethod(int a, int b) {
+    public int add(int a, int b) {
         return a + b ;
     }
-
-    public static boolean isNowBetween (LocalDate startingDate, LocalDate endingDate) {
-        return ( LocalDate.now().isAfter(startingDate)
-                 &&
-                LocalDate.now().isBefore(endingDate)
-        );
-    }
-
-    public static void main(String[] args) {
-        new SimpleClass().someAdditionMethod(1,2);
-
-        System.out.println("Hello world");
-    }
 }