Fix Java 8 Properties

SpigotCore_Main/src/de/steamwar/message/Message.java

@@ -20,7 +20,6 @@
 package de.steamwar.message;
 
 import de.steamwar.core.BountifulWrapper;
-import de.steamwar.core.WorldOfColorWrapper;
 import de.steamwar.sql.SteamwarUser;
 import net.md_5.bungee.api.ChatMessageType;
 import net.md_5.bungee.api.chat.ClickEvent;
@@ -30,12 +29,15 @@ import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 
+import java.nio.charset.StandardCharsets;
 import java.text.MessageFormat;
 import java.util.Locale;
 import java.util.ResourceBundle;
 
 public class Message {
 
+    private static final int JDK_VERSION = Integer.parseInt(System.getProperty("java.version").split("\\.")[1]);
+
     private final String resourceBundleName;
     private final ClassLoader classLoader;
 
@@ -68,12 +70,19 @@ public class Message {
         ResourceBundle resourceBundle = ResourceBundle.getBundle(resourceBundleName, locale, classLoader);
         String pattern = "";
         if(prefixed)
-            pattern = resourceBundle.getObject("PREFIX") + " ";
+            pattern = fromRB(resourceBundle, "PREFIX") + " ";
-        pattern += (String)resourceBundle.getObject(message);
+        pattern += fromRB(resourceBundle, message);
 
         return new MessageFormat(pattern, locale).format(params);
     }
 
+    private String fromRB(ResourceBundle bundle, String key) {
+        String result = bundle.getString(key);
+        if(JDK_VERSION < 9)
+            result = new String(result.getBytes(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8);
+        return result;
+    }
+
     private Locale getLocale(Player player){
         return SteamwarUser.get(player).getLocale();
     }