diff --git a/APED/app/src/main/java/com/example/aped/utils/TestFavorites.java b/APED/app/src/main/java/com/example/aped/utils/TestFavorites.java
index 5eb63ec..ba2c5b7 100644
--- a/APED/app/src/main/java/com/example/aped/utils/TestFavorites.java
+++ b/APED/app/src/main/java/com/example/aped/utils/TestFavorites.java
@@ -9,23 +9,37 @@ import java.util.List;
  */
 public class TestFavorites implements IFAVORITES {
 
+    /**
+     * Liste der favoriten.
+     */
     private List<String> favorites = new ArrayList<>();
 
+    /**
+     * @return
+     */
     @Override
     public List<String> getFavorites() {
         return favorites;
     }
 
+    /**
+     * @param deviceName the name of the device to be added
+     * @return
+     */
     @Override
-    public String addFavorite(String deviceName) {
+    public String addFavorite(final String deviceName) {
         if (!favorites.contains(deviceName)) {
           favorites.add(deviceName);
         }
         return deviceName;
     }
 
+    /**
+     * @param deviceName the name of the device to be removed
+     * @return
+     */
     @Override
-    public String removeFavorite(String deviceName) {
+    public String removeFavorite(final String deviceName) {
         if (favorites.contains(deviceName)) {
            favorites.remove(deviceName);
         }