fix(project): various optimizations

src/main/java/xyz/ineanto/nicko/anvil/AnvilManager.java

@@ -1,5 +1,6 @@
 package xyz.ineanto.nicko.anvil;
 
+import net.kyori.adventure.text.Component;
 import net.wesjd.anvilgui.AnvilGUI;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
@@ -120,7 +121,7 @@ public class AnvilManager {
     private ItemStack getLeftItem(boolean skin) {
         final ItemStack item = new ItemStack(Material.PAPER);
         final ItemMeta meta = item.getItemMeta();
-        if (meta != null) meta.setDisplayName("§0New " + (skin ? "skin" : "name") + "...");
+        if (meta != null) meta.displayName(Component.text("§0New " + (skin ? "skin" : "name") + "..."));
         item.setItemMeta(meta);
         return item;
     }

src/main/java/xyz/ineanto/nicko/i18n/I18N.java

@@ -51,7 +51,7 @@ public class I18N {
 
         if (name == null) {
             logger.warning(nameKey + " doesn't exists! Please translate this entry.");
-            return new ItemTranslation(nameKey, new ArrayList<>() {{
+            return new ItemTranslation(nameKey, new ArrayList<String>() {{
                 add(loreKey);
             }});
         }

src/main/java/xyz/ineanto/nicko/i18n/LocaleFileManager.java

@@ -6,22 +6,14 @@ import xyz.xenondevs.invui.util.IOUtils;
 
 import java.io.*;
 import java.nio.file.Files;
+import java.util.logging.Logger;
 
 public class LocaleFileManager {
+    private final Logger logger = Logger.getLogger("LocaleFileManager");
     private final File folder = new File(NickoBukkit.getInstance().getDataFolder() + "/lang/");
     private final File file = new File(folder, "lang.yml");
     private YamlConfig yamlFile;
 
-    public String getString(String key) {
-        if (!file.exists()) return key;
-        try (BufferedInputStream inputStream = new BufferedInputStream(Files.newInputStream(file.toPath()))) {
-            final YamlConfig yamlConfig = new YamlConfig(inputStream);
-            return yamlConfig.getString(key);
-        } catch (IOException e) {
-            return key;
-        }
-    }
-
     public boolean dumpFromLocale(Locale locale) {
         if (locale == Locale.CUSTOM) return true;
         if (file.exists()) return true;
@@ -36,7 +28,7 @@ public class LocaleFileManager {
             }
             return true;
         } catch (IOException e) {
-            e.printStackTrace();
+            logger.severe("Unable to dump Locale: " + locale.getCode() + "!");
             return false;
         }
     }

src/test/java/xyz/ineanto/nicko/test/config/ConfigurationTest.java

@@ -8,7 +8,6 @@ import org.junit.jupiter.api.Test;
 import xyz.ineanto.nicko.NickoBukkit;
 import xyz.ineanto.nicko.config.Configuration;
 import xyz.ineanto.nicko.config.DefaultDataSources;
-import xyz.ineanto.nicko.config.SQLDataSourceConfiguration;
 
 import static org.junit.jupiter.api.Assertions.assertFalse;