diff --git a/broker/src/main/java/io/moquette/spi/impl/security/ResourceAuthenticator.java b/broker/src/main/java/io/moquette/spi/impl/security/ResourceAuthenticator.java
index 38cbb60a..02d8bdc3 100644
--- a/broker/src/main/java/io/moquette/spi/impl/security/ResourceAuthenticator.java
+++ b/broker/src/main/java/io/moquette/spi/impl/security/ResourceAuthenticator.java
@@ -13,6 +13,7 @@
  *
  * You may elect to redistribute this code under either of these licenses.
  */
+
 package io.moquette.spi.impl.security;
 
 import io.moquette.server.config.IResourceLoader;
@@ -20,7 +21,6 @@ import io.moquette.spi.security.IAuthenticator;
 import org.apache.commons.codec.digest.DigestUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.Reader;
@@ -31,14 +31,17 @@ import java.util.HashMap;
 import java.util.Map;
 
 /**
- * Load user credentials from a text resource.
- * Each line of the file is formatted as "[username]:[sha256(password)]". The username mustn't contains : char.
+ * Load user credentials from a text resource. Each line of the file is formatted as
+ * "[username]:[sha256(password)]". The username mustn't contains : char.
  *
  * To encode your password from command line on Linux systems, you could use:
+ *
  * <pre>
  *     echo -n "yourpassword" | sha256sum
  * </pre>
- * NB -n is important because echo append a newline by default at the of string. -n avoid this behaviour.
+ *
+ * NB -n is important because echo append a newline by default at the of string. -n avoid this
+ * behaviour.
  *
  * @author andrea
  */
@@ -63,24 +66,23 @@ public class ResourceAuthenticator implements IAuthenticator {
             reader = resourceLoader.loadResource(resourceName);
             if (reader == null) {
                 LOG.warn(String.format("Parsing not existing %s %s", resourceLoader.getName(), resourceName));
-            }
-            else {
+            } else {
                 parse(reader);
             }
-        }
-        catch (IResourceLoader.ResourceIsDirectoryException e) {
+        } catch (IResourceLoader.ResourceIsDirectoryException e) {
             LOG.warn(String.format("Trying to parse directory %s", resourceName));
-        }
-        catch (ParseException pex) {
-            LOG.warn(String.format("Format error in parsing password %s %s", resourceLoader.getName(), resourceName), pex);
+        } catch (ParseException pex) {
+            LOG.warn(
+                    String.format("Format error in parsing password %s %s", resourceLoader.getName(), resourceName),
+                    pex);
         }
     }
-    
+
     private void parse(Reader reader) throws ParseException {
         if (reader == null) {
             return;
         }
-        
+
         BufferedReader br = new BufferedReader(reader);
         String line;
         try {
@@ -88,23 +90,23 @@ public class ResourceAuthenticator implements IAuthenticator {
                 int commentMarker = line.indexOf('#');
                 if (commentMarker != -1) {
                     if (commentMarker == 0) {
-                        //skip its a comment
+                        // skip its a comment
                         continue;
                     } else {
-                        //it's a malformed comment
+                        // it's a malformed comment
                         throw new ParseException(line, commentMarker);
                     }
                 } else {
                     if (line.isEmpty() || line.matches("^\\s*$")) {
-                        //skip it's a black line
+                        // skip it's a black line
                         continue;
                     }
-                    
-                    //split till the first space
+
+                    // split till the first space
                     int delimiterIdx = line.indexOf(':');
                     String username = line.substring(0, delimiterIdx).trim();
                     String password = line.substring(delimiterIdx + 1).trim();
-                    
+
                     m_identities.put(username, password);
                 }
             }
@@ -126,5 +128,5 @@ public class ResourceAuthenticator implements IAuthenticator {
         String encodedPasswd = DigestUtils.sha256Hex(password);
         return foundPwq.equals(encodedPasswd);
     }
-    
+
 }