diff --git a/spring-security-oauth/src/main/java/org/baeldung/config/MyAuthorizationCodeAccessTokenProvider.java b/spring-security-oauth/src/main/java/org/baeldung/config/MyAuthorizationCodeAccessTokenProvider.java
index ca37ab3f82..598f97a556 100644
--- a/spring-security-oauth/src/main/java/org/baeldung/config/MyAuthorizationCodeAccessTokenProvider.java
+++ b/spring-security-oauth/src/main/java/org/baeldung/config/MyAuthorizationCodeAccessTokenProvider.java
@@ -23,9 +23,6 @@ import org.springframework.util.MultiValueMap;
 
 public class MyAuthorizationCodeAccessTokenProvider extends AuthorizationCodeAccessTokenProvider implements Serializable {
 
-    /**
-     * 
-     */
     private static final long serialVersionUID = 3822611002661972274L;
 
     private StateKeyGenerator stateKeyGenerator = new DefaultStateKeyGenerator();
diff --git a/spring-security-oauth/src/main/java/org/baeldung/web/RedditController.java b/spring-security-oauth/src/main/java/org/baeldung/web/RedditController.java
index f6fe2d241c..8fbca7fc75 100644
--- a/spring-security-oauth/src/main/java/org/baeldung/web/RedditController.java
+++ b/spring-security-oauth/src/main/java/org/baeldung/web/RedditController.java
@@ -24,7 +24,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 @Controller
 public class RedditController {
 
-    private final Logger LOGGER = LoggerFactory.getLogger(getClass());
+    private final Logger logger = LoggerFactory.getLogger(getClass());
 
     @Autowired
     private OAuth2RestTemplate redditRestTemplate;
@@ -33,38 +33,37 @@ public class RedditController {
 
     @RequestMapping("/info")
     public final String getInfo(Model model) {
-        JsonNode node = redditRestTemplate.getForObject("https://oauth.reddit.com/api/v1/me", JsonNode.class);
-        String name = node.get("name").asText();
+        final JsonNode node = redditRestTemplate.getForObject("https://oauth.reddit.com/api/v1/me", JsonNode.class);
+        final String name = node.get("name").asText();
         model.addAttribute("info", name);
         return "reddit";
     }
 
     @RequestMapping("/submit")
     public final String submit(Model model, @RequestParam Map<String, String> formParams) {
-        MultiValueMap<String, String> param = new LinkedMultiValueMap<String, String>();
+        final MultiValueMap<String, String> param = new LinkedMultiValueMap<String, String>();
         param.add("api_type", "json");
         param.add("kind", "link");
         param.add("resubmit", "true");
         param.add("sendreplies", "false");
         param.add("then", "comments");
-
-        for (Map.Entry<String, String> entry : formParams.entrySet()) {
+        for (final Map.Entry<String, String> entry : formParams.entrySet()) {
             param.add(entry.getKey(), entry.getValue());
         }
 
-        LOGGER.info("User submitting Link with these parameters: " + formParams.entrySet());
+        logger.info("User submitting Link with these parameters: " + formParams.entrySet());
         JsonNode node = redditRestTemplate.postForObject("https://oauth.reddit.com/api/submit", param, JsonNode.class);
-        LOGGER.info("Full Reddit Response: " + node.toString());
+        logger.info("Full Reddit Response: " + node.toString());
         String responseMsg = parseResponse(node);
         model.addAttribute("msg", responseMsg);
         return "submissionResponse";
     }
 
     @RequestMapping("/post")
-    public final String showSubmissionForm(Model model) {
-        String needsCaptchaResult = needsCaptcha();
+    public final String showSubmissionForm(final Model model) {
+        final String needsCaptchaResult = needsCaptcha();
         if (needsCaptchaResult.equalsIgnoreCase("true")) {
-            String iden = getNewCaptcha();
+            final String iden = getNewCaptcha();
             model.addAttribute("iden", iden);
         }
         return "submissionForm";
@@ -72,34 +71,33 @@ public class RedditController {
 
     // === private
 
-    List<String> getSubreddit() throws JsonProcessingException, IOException {
-        String result = redditRestTemplate.getForObject("https://oauth.reddit.com/subreddits/popular?limit=50", String.class);
-        JsonNode node = new ObjectMapper().readTree(result);
-        node = node.get("data").get("children");
-        List<String> subreddits = new ArrayList<String>();
+    final List<String> getSubreddit() throws JsonProcessingException, IOException {
+        final String result = redditRestTemplate.getForObject("https://oauth.reddit.com/subreddits/popular?limit=50", String.class);
+        final JsonNode node = new ObjectMapper().readTree(result).get("data").get("children");
+        final List<String> subreddits = new ArrayList<String>();
         for (JsonNode child : node) {
             subreddits.add(child.get("data").get("display_name").asText());
         }
         return subreddits;
     }
 
-    private String needsCaptcha() {
+    private final String needsCaptcha() {
         String result = redditRestTemplate.getForObject("https://oauth.reddit.com/api/needs_captcha.json", String.class);
         return result;
     }
 
-    private String getNewCaptcha() {
-        Map<String, String> param = new HashMap<String, String>();
+    private final String getNewCaptcha() {
+        final Map<String, String> param = new HashMap<String, String>();
         param.put("api_type", "json");
 
-        String result = redditRestTemplate.postForObject("https://oauth.reddit.com/api/new_captcha", param, String.class, param);
-        String[] split = result.split("\"");
+        final String result = redditRestTemplate.postForObject("https://oauth.reddit.com/api/new_captcha", param, String.class, param);
+        final String[] split = result.split("\"");
         return split[split.length - 2];
     }
 
-    private String parseResponse(JsonNode node) {
+    private final String parseResponse(final JsonNode node) {
         String result = "";
-        JsonNode errorNode = node.get("json").get("errors").get(0);
+        final JsonNode errorNode = node.get("json").get("errors").get(0);
         if (errorNode != null) {
             for (JsonNode child : errorNode) {
                 result = result + child.toString().replaceAll("\"|null", "") + "<br>";