ConfigChecker

  public void delayedLoad(long delay, final Plugin instance){
        new BukkitRunnable(){
            @Override
            public void run(){
                addFiles();
            }
        }.runTaskLater(this, delay);
    }

    @SuppressWarnings("unchecked")
    public void getConfigList() {
        if (config.get("Configs.List") != null) {
            ArrayList<String> cons = (ArrayList)config.getList("Configs.List");
            for (String names : cons) {
                File configFile = new File(getDataFolder(), names + ".yml");
                if (configFile.exists()) {
                    Config name;
                    toadd.add(configFile.getName().replace(".yml", ""));
                    name = manager.getNewConfig(configFile.getName());
                } else {
                    config.getList("Configs.List").remove(names);
                    config.saveConfig();
                }
            }
            delayedLoad(20, this);
        }
    }

    public void addFiles(){
        if (toadd.isEmpty()) {
            return;
        }
        else{
            for(String file : toadd){
                if(!files.contains(file)){
                    files.add(file);
                }
            }
        }
    }