ADD::added more comments

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

@@ -29,7 +29,7 @@ public class RegisterWindowController {
 
     /**
      * signs the user up.
-     * @param event the click of the signup button
+     * @param event the click of the sign up button
      */
     @FXML
     public void handleSignUpButton(ActionEvent event) {
@@ -59,6 +59,7 @@ public class RegisterWindowController {
             return;
         }
 
+        //register the user with the provided username and password
         userService.registerUser(userNameText.getText(), passwordField.getText());
 
         //close the register window after the user has entered all the credentials

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

@@ -58,7 +58,7 @@ public class UserController {
         if (passwordField.getText().isEmpty()) {
             AlertHelper.showAlert(Alert.AlertType.ERROR, owner, "Log-in Error!",
                     "Please enter a password");
-            //checks if the password field id filled,
+            //checks if the password field is filled,
             // and gives an alert if it is not.
             return;
         } else {
@@ -117,9 +117,11 @@ public class UserController {
     }
 
     /**
-     * The method handles register button.
-     * @param event User clicks to the button
-     * @throws Exception when the file couldn't be found
+     * The method handles the clicking of the register button.
+     * it then opens the register window where the user can register
+     * (handled by RegisterWindowController)
+     * @param event User clicks on the button
+     * @throws Exception when the fxml file couldn't be found
      */
     public void handleRegisterButtonAction(ActionEvent event) throws Exception {
         Parent registerWindow = Application.load(this.getClass().getClassLoader()

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

@@ -51,6 +51,7 @@ public class UserService {
         System.out.println(builder.build().encode().toUri());
 
         //the result to be sent is a userDto
+        //encodes the userDTO object to a Uri so the database can work with it
         UserDto result = this.restTemplate.getForObject(builder.build()
                 .encode().toUri(), UserDto.class);
         this.currentUser = result;