diff --git a/src/main/java/fr/xephi/authme/datasource/MySQL.java b/src/main/java/fr/xephi/authme/datasource/MySQL.java
index 4e669578..01a240fe 100644
--- a/src/main/java/fr/xephi/authme/datasource/MySQL.java
+++ b/src/main/java/fr/xephi/authme/datasource/MySQL.java
@@ -12,7 +12,6 @@ import fr.xephi.authme.settings.Settings;
 import fr.xephi.authme.settings.properties.DatabaseSettings;
 import fr.xephi.authme.settings.properties.HooksSettings;
 import fr.xephi.authme.util.StringUtils;
-import fr.xephi.authme.util.Utils;
 
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
@@ -344,7 +343,8 @@ public class MySQL implements DataSource {
 
             if (!columnOthers.isEmpty()) {
                 for (String column : columnOthers) {
-                    try (PreparedStatement pst = con.prepareStatement("UPDATE " + tableName + " SET " + column + "=? WHERE " + col.NAME + "=?;")) {
+                    try (PreparedStatement pst = con.prepareStatement(
+                        "UPDATE " + tableName + " SET " + column + "=? WHERE " + col.NAME + "=?;")) {
                         pst.setString(1, auth.getRealName());
                         pst.setString(2, auth.getNickname());
                         pst.executeUpdate();
diff --git a/src/main/java/fr/xephi/authme/datasource/mysqlextensions/XfBcryptExtension.java b/src/main/java/fr/xephi/authme/datasource/mysqlextensions/XfBcryptExtension.java
index 46dd41ef..84ab4c95 100644
--- a/src/main/java/fr/xephi/authme/datasource/mysqlextensions/XfBcryptExtension.java
+++ b/src/main/java/fr/xephi/authme/datasource/mysqlextensions/XfBcryptExtension.java
@@ -85,6 +85,7 @@ class XfBcryptExtension extends MySqlExtension {
         }
     }
 
+    @Override
     public void extendAuth(PlayerAuth auth, int id, Connection con) throws SQLException {
         try (PreparedStatement pst = con.prepareStatement(
             "SELECT data FROM " + xfPrefix + "user_authenticate WHERE " + col.ID + "=?;")) {
diff --git a/src/main/java/fr/xephi/authme/initialization/OnStartupTasks.java b/src/main/java/fr/xephi/authme/initialization/OnStartupTasks.java
index e669a5a7..498e5c26 100644
--- a/src/main/java/fr/xephi/authme/initialization/OnStartupTasks.java
+++ b/src/main/java/fr/xephi/authme/initialization/OnStartupTasks.java
@@ -83,6 +83,10 @@ public class OnStartupTasks {
         logger.addFilter(new Log4JFilter());
     }
 
+    /**
+     * Starts a task that regularly reminds players without a defined email to set their email,
+     * if enabled.
+     */
     public void scheduleRecallEmailTask() {
         if (!settings.getProperty(RECALL_PLAYERS)) {
             return;
diff --git a/src/main/java/fr/xephi/authme/permission/PermissionsManager.java b/src/main/java/fr/xephi/authme/permission/PermissionsManager.java
index ef9d8bdd..55845f74 100644
--- a/src/main/java/fr/xephi/authme/permission/PermissionsManager.java
+++ b/src/main/java/fr/xephi/authme/permission/PermissionsManager.java
@@ -258,6 +258,15 @@ public class PermissionsManager implements Reloadable {
         return handler.hasPermissionOffline(player.getName(), permissionNode);
     }
 
+    /**
+     * Check whether the offline player with the given name has permission for the given permission node.
+     * This method is used as a last resort when nothing besides the name is known.
+     *
+     * @param name The name of the player
+     * @param permissionNode The permission node to verify
+     *
+     * @return true if the player has permission, false otherwise
+     */
     public boolean hasPermissionOffline(String name, PermissionNode permissionNode) {
         if (permissionNode == null) {
             return true;
diff --git a/src/main/java/fr/xephi/authme/process/Management.java b/src/main/java/fr/xephi/authme/process/Management.java
index a6eb0005..5260fed1 100644
--- a/src/main/java/fr/xephi/authme/process/Management.java
+++ b/src/main/java/fr/xephi/authme/process/Management.java
@@ -12,7 +12,6 @@ import fr.xephi.authme.process.register.executors.RegistrationMethod;
 import fr.xephi.authme.process.register.executors.RegistrationParameters;
 import fr.xephi.authme.process.unregister.AsynchronousUnregister;
 import fr.xephi.authme.service.BukkitService;
-import org.bukkit.Location;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 
diff --git a/src/main/java/fr/xephi/authme/process/join/AsynchronousJoin.java b/src/main/java/fr/xephi/authme/process/join/AsynchronousJoin.java
index ed63e3ed..6cb16a67 100644
--- a/src/main/java/fr/xephi/authme/process/join/AsynchronousJoin.java
+++ b/src/main/java/fr/xephi/authme/process/join/AsynchronousJoin.java
@@ -20,7 +20,6 @@ import fr.xephi.authme.settings.properties.RegistrationSettings;
 import fr.xephi.authme.settings.properties.RestrictionSettings;
 import fr.xephi.authme.util.PlayerUtils;
 import org.bukkit.GameMode;
-import org.bukkit.Location;
 import org.bukkit.Server;
 import org.bukkit.entity.Player;
 import org.bukkit.potion.PotionEffect;
diff --git a/src/main/java/fr/xephi/authme/service/AntiBotService.java b/src/main/java/fr/xephi/authme/service/AntiBotService.java
index 90c62a24..b6540099 100644
--- a/src/main/java/fr/xephi/authme/service/AntiBotService.java
+++ b/src/main/java/fr/xephi/authme/service/AntiBotService.java
@@ -98,6 +98,9 @@ public class AntiBotService implements SettingsDependent {
         disableTask = bukkitService.runTaskLater(this::stopProtection, duration * TICKS_PER_MINUTE);
     }
 
+    /**
+     * Transitions the anti bot service from active status back to listening.
+     */
     private void stopProtection() {
         if (antiBotStatus != AntiBotStatus.ACTIVE) {
             return;
diff --git a/src/main/java/fr/xephi/authme/service/TeleportationService.java b/src/main/java/fr/xephi/authme/service/TeleportationService.java
index 38917d4d..10f9e117 100644
--- a/src/main/java/fr/xephi/authme/service/TeleportationService.java
+++ b/src/main/java/fr/xephi/authme/service/TeleportationService.java
@@ -79,7 +79,8 @@ public class TeleportationService implements Reloadable {
             && settings.getProperty(TELEPORT_UNAUTHED_TO_SPAWN)) {
             final Location location = spawnLoader.getSpawnLocation(player);
 
-            SpawnTeleportEvent event = new SpawnTeleportEvent(player, location, playerCache.isAuthenticated(player.getName()));
+            SpawnTeleportEvent event = new SpawnTeleportEvent(player, location,
+                playerCache.isAuthenticated(player.getName()));
             bukkitService.callEvent(event);
             if(!isEventValid(event)) {
                 return null;
diff --git a/src/main/java/fr/xephi/authme/service/bungeecord/BungeeSender.java b/src/main/java/fr/xephi/authme/service/bungeecord/BungeeSender.java
index 0b5e6ca6..6c559f6b 100644
--- a/src/main/java/fr/xephi/authme/service/bungeecord/BungeeSender.java
+++ b/src/main/java/fr/xephi/authme/service/bungeecord/BungeeSender.java
@@ -12,7 +12,6 @@ import org.bukkit.entity.Player;
 import org.bukkit.plugin.messaging.Messenger;
 
 import javax.inject.Inject;
-import java.io.Console;
 
 public class BungeeSender implements SettingsDependent {