Password Validation

Let's help the user to register 😎 Implement the following methods:

• registerUser() in the UserService class;
• validate() in the PasswordValidator class.

The validate() method should compare the password field with the repeatPassword field and check if their length is more or equal to 10. If not, throw the PasswordValidationException exception with the Wrong passwords message. Since it's our custom logic, let's create our own exception. We should handle the not-valid case and return the understandable message.

The registerUser() method should call the validate() method and handle the exception. If everything is okay, save the user to the database (use the saveUser() method). If not, print the Your passwords are incorrect. Try again. message.