Minor fixes as reported by CodeClimate

src/main/java/fr/xephi/authme/datasource/SQLite.java

@@ -182,7 +182,11 @@ public class SQLite extends AbstractSqlDataSource {
         ConsoleLogger.info("SQLite Setup finished");
     }
 
-    protected void migrateIfNeeded() throws SQLException {
+    /**
+     * Migrates the database if necessary. See {@link SqLiteMigrater} for details.
+     */
+    @VisibleForTesting
+    void migrateIfNeeded() throws SQLException {
         DatabaseMetaData metaData = con.getMetaData();
         if (SqLiteMigrater.isMigrationRequired(metaData, tableName, col)) {
             new SqLiteMigrater(settings, dataFolder).performMigration(this);

src/main/java/fr/xephi/authme/datasource/mysqlextensions/XfBcryptExtension.java

@@ -35,7 +35,14 @@ class XfBcryptExtension extends MySqlExtension {
             updateXenforoTablesOnSave(auth, authId.getAsInt(), con);
         }
     }
-    
+
+    /**
+     * Updates the xenforo tables after a player auth has been saved.
+     *
+     * @param auth the player auth which was saved
+     * @param id the account id
+     * @param con connection to the database
+     */
     private void updateXenforoTablesOnSave(PlayerAuth auth, int id, Connection con) throws SQLException {
         // Insert player password, salt in xf_user_authenticate
         String sql = "INSERT INTO " + xfPrefix + "user_authenticate (user_id, scheme_class, data) VALUES (?,?,?)";

src/main/java/fr/xephi/authme/listener/protocollib/ProtocolLibService.java

@@ -79,6 +79,9 @@ public class ProtocolLibService implements SettingsDependent {
         this.isEnabled = true;
     }
 
+    /**
+     * Stops all features based on ProtocolLib.
+     */
     public void disable() {
         isEnabled = false;
 

src/main/java/fr/xephi/authme/security/crypts/MyBB.java

@@ -10,6 +10,7 @@ import static fr.xephi.authme.security.HashUtils.md5;
 
 @Recommendation(Usage.ACCEPTABLE)
 @HasSalt(value = SaltType.TEXT, length = 8)
+@SuppressWarnings({"checkstyle:AbbreviationAsWordInName"})
 public class MyBB extends SeparateSaltMethod {
 
     @Override

src/main/java/fr/xephi/authme/service/BackupService.java

@@ -97,6 +97,11 @@ public class BackupService {
         return false;
     }
 
+    /**
+     * Performs a backup for the MySQL data source.
+     *
+     * @return true if successful, false otherwise
+     */
     private boolean performMySqlBackup() {
         FileUtils.createDirectory(backupFolder);
         File sqlBackupFile = constructBackupFile("sql");

src/main/java/fr/xephi/authme/service/GeoIpService.java

@@ -226,8 +226,8 @@ public class GeoIpService {
         HashCode actualHash = function.hashBytes(Files.readAllBytes(file));
         HashCode expectedHash = HashCode.fromString(expectedChecksum);
         if (!Objects.equals(actualHash, expectedHash)) {
-            throw new IOException("GEO IP Checksum verification failed. " +
-                    "Expected: " + expectedChecksum + "Actual:" + actualHash);
+            throw new IOException("GEO IP Checksum verification failed. "
+                + "Expected: " + expectedChecksum + "Actual:" + actualHash);
         }
     }
 
@@ -267,10 +267,10 @@ public class GeoIpService {
      *
      * @param ip textual IP address to lookup.
      * @return two-character ISO 3166-1 alpha code for the country, "LOCALHOST" for local addresses
-     * or "--" if it cannot be fetched.
+     *         or "--" if it cannot be fetched.
      */
     public String getCountryCode(String ip) {
-        if(InternetProtocolUtils.isLocalAddress(ip)) {
+        if (InternetProtocolUtils.isLocalAddress(ip)) {
             return "LOCALHOST";
         }
         return getCountry(ip).map(Country::getIsoCode).orElse("--");
@@ -283,7 +283,7 @@ public class GeoIpService {
      * @return The name of the country, "LocalHost" for local addresses, or "N/A" if it cannot be fetched.
      */
     public String getCountryName(String ip) {
-        if(InternetProtocolUtils.isLocalAddress(ip)) {
+        if (InternetProtocolUtils.isLocalAddress(ip)) {
             return "LocalHost";
         }
         return getCountry(ip).map(Country::getName).orElse("N/A");

src/main/java/fr/xephi/authme/service/PluginHookService.java

@@ -69,7 +69,7 @@ public class PluginHookService {
      */
     public File getCmiDataFolder() {
         Plugin plugin = pluginManager.getPlugin("CMI");
-        if(plugin == null) {
+        if (plugin == null) {
             return null;
         }
         return plugin.getDataFolder();