FIX: Checkstyle fixes after merge conflicts

src/Client/src/main/java/greenify/client/controller/DashBoardController.java

@@ -158,11 +158,16 @@ public class DashBoardController {
         pathTrans.play();
     }
 
+    /**
+     * Opens the calculator.
+     * @throws IOException if the Application doesn't load.
+     */
     public void openCalculator() throws IOException {
         Parent calc = Application.load(this.getClass().getClassLoader()
                 .getResource("fxml/calculator.fxml"));
         Scene scene = new Scene(calc);
-        scene.getStylesheets().add(getClass().getClassLoader().getResource("stylesheets/calculatorStyle.css").toExternalForm());
+        scene.getStylesheets().add(getClass().getClassLoader()
+                .getResource("stylesheets/calculatorStyle.css").toExternalForm());
         Stage calcStage = new Stage();
 
         calcStage.setScene(scene);

src/Client/src/main/java/greenify/client/rest/UserService.java

@@ -99,6 +99,12 @@ public class UserService {
                 .encode().toUri(), String.class);
     }
 
+    /**
+     * Adds a friend to the user.
+     * @param name the username of the current user.
+     * @param friend the username of the friend you want to add.
+     * @return a userDTO
+     */
     @SuppressWarnings("Duplicates")
     public String addFriend(String name, String friend) {
         HttpHeaders headers = new HttpHeaders();