Java:
public Arena getArenaFromWorld(World world){
List<String> arenas = config.getStringList("KitPVP.arenas.*");
if(arenas == null){
Bukkit.broadcastMessage("null");
}else{
Bukkit.broadcastMessage("not null");
Bukkit.broadcastMessage(String.valueOf(arenas));
}
if(arenas != null && !arenas.isEmpty()) for(String arenaFor : arenas) {
Bukkit.broadcastMessage(arenaFor);
// if (((String) config.get("KitPVP.arenas." + arenaFor + ".world")).equalsIgnoreCase(world.getName())){
// return getArena(arenaFor);
// }
}
return null;
}