diff --git a/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/ActiveConnectionSet.java b/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/ActiveConnectionSet.java
index 769b7f02f..d04f79871 100644
--- a/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/ActiveConnectionSet.java
+++ b/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/ActiveConnectionSet.java
@@ -1,3 +1,6 @@
+
+package net.sourceforge.guacamole.net.auth.mysql;
+
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *
@@ -33,15 +36,14 @@
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
-package net.sourceforge.guacamole.net.auth.mysql;
 
 import java.util.HashSet;
-import java.util.Set;
 
 /**
- * Represents the set of currently active Connections. Whenever a socket is opened,
- * the connection ID should be added to this set, and whenever a socket is closed,
- * the connection ID should be removed from this set.
- * @author dagger10k
+ * Represents the set of currently active Connections. Whenever a socket is
+ * opened, the connection ID should be added to this set, and whenever a socket
+ * is closed, the connection ID should be removed from this set.
+ *
+ * @author James Muehlner
  */
-public class ActiveConnectionSet extends HashSet<Integer> implements Set<Integer> {}
+public class ActiveConnectionSet extends HashSet<Integer> {}
diff --git a/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/MySQLAuthenticationProvider.java b/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/MySQLAuthenticationProvider.java
index 22a00e7e4..79132b23d 100644
--- a/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/MySQLAuthenticationProvider.java
+++ b/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/MySQLAuthenticationProvider.java
@@ -1,3 +1,6 @@
+
+package net.sourceforge.guacamole.net.auth.mysql;
+
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *
@@ -33,7 +36,6 @@
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
-package net.sourceforge.guacamole.net.auth.mysql;
 
 import com.google.inject.Binder;
 import com.google.inject.Guice;
@@ -63,20 +65,24 @@ import net.sourceforge.guacamole.properties.GuacamoleProperties;
 import org.mybatis.guice.MyBatisModule;
 import org.mybatis.guice.datasource.builtin.PooledDataSourceProvider;
 import org.mybatis.guice.datasource.helper.JdbcHelper;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /**
  * Provides a MySQL based implementation of the AuthenticationProvider
  * functionality.
+ *
  * @author James Muehlner
  */
 public class MySQLAuthenticationProvider implements AuthenticationProvider {
 
-    private Logger logger = LoggerFactory.getLogger(MySQLUserContext.class);
-
+    /**
+     * Set of all active connections.
+     */
     private ActiveConnectionSet activeConnectionSet = new ActiveConnectionSet();
 
+    /**
+     * Injector which will manage the object graph of this authentication
+     * provider.
+     */
     private Injector injector;
 
     @Override
@@ -86,9 +92,19 @@ public class MySQLAuthenticationProvider implements AuthenticationProvider {
         return context;
     }
 
+    /**
+     * Creates a new MySQLAuthenticationProvider that reads and writes
+     * authentication data to a MySQL database defined by properties in
+     * guacamole.properties.
+     *
+     * @throws GuacamoleException If a required property is missing, or
+     *                            an error occurs while parsing a property.
+     */
     public MySQLAuthenticationProvider() throws GuacamoleException {
+
         final Properties myBatisProperties = new Properties();
-        //set the mysql properties for MyBatis.
+
+        // Set the mysql properties for MyBatis.
         myBatisProperties.setProperty("mybatis.environment.id", "guacamole");
         myBatisProperties.setProperty("JDBC.host", GuacamoleProperties.getRequiredProperty(MySQLGuacamoleProperties.MYSQL_HOSTNAME));
         myBatisProperties.setProperty("JDBC.port", String.valueOf(GuacamoleProperties.getRequiredProperty(MySQLGuacamoleProperties.MYSQL_PORT)));
@@ -100,21 +116,30 @@ public class MySQLAuthenticationProvider implements AuthenticationProvider {
         // Set up Guice injector.
         injector = Guice.createInjector(
             JdbcHelper.MySQL,
+
             new Module() {
                 @Override
                 public void configure(Binder binder) {
                     Names.bindProperties(binder, myBatisProperties);
                 }
-            },new MyBatisModule() {
+            },
+
+            new MyBatisModule() {
                 @Override
                 protected void initialize() {
+
+                    // Datasource
                     bindDataSourceProviderType(PooledDataSourceProvider.class);
+
+                    // Add MyBatis mappers
                     addMapperClass(ConnectionMapper.class);
                     addMapperClass(ConnectionParameterMapper.class);
                     addMapperClass(ConnectionPermissionMapper.class);
                     addMapperClass(SystemPermissionMapper.class);
                     addMapperClass(UserMapper.class);
                     addMapperClass(UserPermissionMapper.class);
+
+                    // Bind interfaces
                     bind(MySQLUserContext.class);
                     bind(UserDirectory.class);
                     bind(MySQLUser.class);
@@ -124,8 +149,11 @@ public class MySQLAuthenticationProvider implements AuthenticationProvider {
                     bind(ProviderUtility.class);
                     bind(ConfigurationTranslationUtility.class);
                     bind(ActiveConnectionSet.class).toInstance(activeConnectionSet);
+
                 }
-            }
+            } // end of mybatis module
+
         );
-    }
+    } // end of constructor
+
 }
diff --git a/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/UserDirectory.java b/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/UserDirectory.java
index 3014d33cc..5faf31b47 100644
--- a/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/UserDirectory.java
+++ b/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/UserDirectory.java
@@ -130,7 +130,9 @@ public class UserDirectory implements Directory<String, net.sourceforge.guacamol
 
     /**
      * Set the user for this directory.
-     * @param user
+     *
+     * @param user The user whose permissions define the visibility of other
+     *             users in this directory.
      */
     void init(MySQLUser user) {
         this.user = user;
@@ -150,7 +152,7 @@ public class UserDirectory implements Directory<String, net.sourceforge.guacamol
 
         // Get set of all readable users
         Set<MySQLUser> users = permissionCheckUtility.getReadableUsers(user.getUserID());
-        
+
         // Build set of usernames of readable users
         Set<String> userNameSet = new HashSet<String>();
         for (MySQLUser mySQLUser : users)
@@ -202,7 +204,7 @@ public class UserDirectory implements Directory<String, net.sourceforge.guacamol
      * Update all the permissions for a given user to be only those specified in the user object.
      * Delete any permissions not in the list, and create any in the list that do not exist
      * in the database.
-     * 
+     *
      * @param user The user whose permissions should be updated.
      * @throws GuacamoleException If an error occurs while updating the
      *                            permissions of the given user.
@@ -213,7 +215,7 @@ public class UserDirectory implements Directory<String, net.sourceforge.guacamol
         List<UserPermission> userPermissions = new ArrayList<UserPermission>();
         List<ConnectionPermission> connectionPermissions = new ArrayList<ConnectionPermission>();
         List<SystemPermission> systemPermissions = new ArrayList<SystemPermission>();
-        
+
         for (Permission permission : user.getPermissions()) {
 
             if (permission instanceof UserPermission)
@@ -231,12 +233,12 @@ public class UserDirectory implements Directory<String, net.sourceforge.guacamol
         updateUserPermissions(userPermissions, user);
         updateConnectionPermissions(connectionPermissions, user);
         updateSystemPermissions(systemPermissions, user);
-        
+
     }
 
     /**
      * Update all the permissions having to do with users for a given user.
-     * 
+     *
      * @param permissions The permissions the given user should have when
      *                    this operation completes.
      * @param user The user to change the permissions of.
@@ -334,7 +336,7 @@ public class UserDirectory implements Directory<String, net.sourceforge.guacamol
     /**
      * Update all the permissions having to do with connections for a given
      * user.
-     * 
+     *
      * @param permissions The permissions the user should have after this
      *                    operation completes.
      * @param user The user to assign or remove permissions from.
@@ -432,7 +434,7 @@ public class UserDirectory implements Directory<String, net.sourceforge.guacamol
      * the given list not already granted to the user will be inserted, and all
      * permissions not in the list but already granted to the user will be
      * deleted.
-     * 
+     *
      * @param permissions The system permissions that the given user should
      *                    have.
      * @param user The user whose permissions should be updated.
@@ -526,7 +528,7 @@ public class UserDirectory implements Directory<String, net.sourceforge.guacamol
     /**
      * Delete all permissions associated with the provided user. This is only
      * used when deleting a user.
-     * 
+     *
      * @param user The user to delete all permissions of.
      */
     private void deleteAllPermissions(MySQLUser user) {
diff --git a/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/utility/Sha256PasswordEncryptionUtility.java b/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/utility/Sha256PasswordEncryptionUtility.java
index 844b13d67..d2a0ae7f8 100644
--- a/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/utility/Sha256PasswordEncryptionUtility.java
+++ b/extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/utility/Sha256PasswordEncryptionUtility.java
@@ -57,7 +57,7 @@ public class Sha256PasswordEncryptionUtility implements PasswordEncryptionUtilit
         // If usernames don't match, don't bother comparing passwords, just fail
         if (!dbUsername.equals(credentials.getUsername()))
             return false;
-        
+
         // Compare bytes of password in credentials against hashed password
         byte[] passwordBytes = createPasswordHash(credentials.getPassword(), dbSalt);
         return Arrays.equals(passwordBytes, dbPasswordHash);
@@ -73,7 +73,7 @@ public class Sha256PasswordEncryptionUtility implements PasswordEncryptionUtilit
             StringBuilder builder = new StringBuilder();
             builder.append(password);
             builder.append(DatatypeConverter.printHexBinary(salt));
-            
+
             // Hash UTF-8 bytes of salted password
             MessageDigest md = MessageDigest.getInstance("SHA-256");
             md.update(builder.toString().getBytes("UTF-8"));