Added UserService field to AuthenticationService

src/main/java/mate/academy/service/AuthenticationService.java

@@ -3,6 +3,12 @@
 import mate.academy.model.User;
 
 public class AuthenticationService {
+    private final UserService userService;
+
+    public AuthenticationService() {
+        this.userService = new UserService();
+    }
+
     /**
      * Imagine that some user wants to login to your site.
      * You should check if user credentials (login and password) are valid or not.
@@ -12,8 +18,9 @@ public class AuthenticationService {
      * @return true if user by email exists and passed password is equal to user's password.
      * Return false in any other cases.
      */
+
     public boolean login(String email, String password) {
-        User user = UserService.findByEmail(email);
+        User user = userService.findByEmail(email);
         return user != null && user.getPassword().equals(password);
     }
 }

src/main/java/mate/academy/service/UserService.java

@@ -14,7 +14,8 @@ public class UserService {
      * @return - user if his email is equal to passed email.
      * Return <code>null</code> if there is no suitable user
      */
-    public static User findByEmail(String email) {
+
+    public User findByEmail(String email) {
         for (User user : users) {
             if (user.getEmail().equals(email)) {
                 return user;