Inventory and config error

Hello everybody. It is again me. I am progressed with my plugin but now I have a problem with it. Now from some reason it do not want to write in config what it must. It let it empty. i send My full code. With the text in "" are in slovak language because I am doing this for a slovak server.
Main:

Code:

package me.domi.test;

import java.io.File;

import org.bukkit.Bukkit;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.Listener;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

import me.domi.test.common.Files;

public class Main extends JavaPlugin implements Listener {
  
    private Inv inventory;
    public Files clans;
    public Files config;
  
    public void onEnable() {
        config = new Files(getDataFolder(), "config");
        clans = new Files(new File(getDataFolder() + "/Data"), "clans");
      
        if (!config.fileExists()) {
            config.createFile();
            config.loadFile();
            config.saveFile();
        }
      
        if (!clans.fileExists()) {
            clans.createFile();
            clans.loadFile();
            config.saveFile();
        }
        inventory = new Inv(this);
        PluginManager pm = Bukkit.getServer().getPluginManager();
            pm.registerEvents(new Listeners(), this);
            pm.registerEvents(this, this);
    }
  
    public void onDisable() {

    }
  
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        Player p = (Player) sender;
        if (cmd.getName().equalsIgnoreCase("test")) {
            inventory.show(p);
            return true;
        }
        return true;
      
    }
  
}

Files:

Code:

package me.domi.test.common;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;

import org.bukkit.configuration.InvalidConfigurationException;
import org.bukkit.configuration.file.YamlConfiguration;

public class Files {
  
    private File folder;
    private File file;
    private YamlConfiguration config;

    public Files(File folder, String filename) {
        this.folder = folder;
        this.file = new File(folder, filename + ".yml");
        this.config = new YamlConfiguration();
    }
  
    public Files(File folder, File file) {
        this.folder = folder;
        this.file = file;
        this.config = new YamlConfiguration();
    }
  
    public boolean createFile() {
        if (!folder.exists()) {
            folder.mkdirs();
        }
      
        if (!file.exists()) {
            try {
                file.createNewFile();
                return true;
            } catch (Exception e) {
                e.printStackTrace();
                return false;
            }
        } else {
            return false;
        }
    }
  
    public boolean fileExists() {
        if (file.exists()) {
            return true;
        } else {
            return false;
        }
    }
  
    public boolean loadFile() {
        try {
            config.load(file);
            return true;
        } catch (FileNotFoundException e) {
            createFile();
            e.printStackTrace();
            return false;
        } catch (IOException e) {
            createFile();
            e.printStackTrace();
            return false;
        } catch (InvalidConfigurationException e) {
            createFile();
            e.printStackTrace();
            return false;
        }
    }
  
    public boolean saveFile() {
      
        try {
            config.save(file);
            return true;
        } catch (IOException e) {
            System.out.println("ERROR Subor " + file.getName() + " sa neulozil. Nahlaste majitelovy!!!");
            return false;
        }
    }
  
    public void set(String path, Object value) {
        config.set(path, value);
    }
  
    public int getInt(String path) {
        return config.getInt(path);
    }
  
    public String getString(String path) {
        return config.getString(path);
    }
  
    public List<String> getStringList(String path) {
        return config.getStringList(path);
    }
  
    public List<Integer> getIntList(String path) {
        return config.getIntegerList(path);
    }
  
    public List<?> getList(String path) {
        return config.getList(path);
    }
  
    public boolean getBoolean(String path) {
        return config.getBoolean(path);
    }
}

Msg:

Code:

package me.domi.test.common;

import org.bukkit.entity.Player;

import net.md_5.bungee.api.ChatColor;

public class Msg {

    public void sendRedMessage(Player p, String s) {
        p.sendMessage(ChatColor.RED + "[" + ChatColor.GOLD + "Klans" + ChatColor.RED + "]" + ChatColor.RED);
    }
  
    public void sendGoldsage(Player p, String s) {
        p.sendMessage(ChatColor.RED + "[" + ChatColor.GOLD + "Klans" + ChatColor.RED + "]" + ChatColor.GOLD);

    }
  
  
    public void sendAquaMessage(Player p, String s) {
        p.sendMessage(ChatColor.RED + "[" + ChatColor.GOLD + "Klans" + ChatColor.RED + "]" + ChatColor.AQUA);
    }
   
}

Listeners:

Code:

package me.domi.test;

import java.util.ArrayList;
import java.util.List;

import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.event.player.AsyncPlayerChatEvent;

import me.domi.test.common.Msg;
import net.md_5.bungee.api.ChatColor;

public class Listeners implements Listener{

    public static List<String> klannaming = new ArrayList<>();
    public static List<String> klandisband = new ArrayList<>();
    public Main plugin;
   
    @EventHandler
    public void onInventoryClick(InventoryClickEvent e) {
        if (e.getInventory().getName().equalsIgnoreCase("Klan")) {
            if (e.getCurrentItem().getItemMeta().getDisplayName().contains("Vytvoriť")) {
                e.setCancelled(true);
                e.getWhoClicked().closeInventory();
                Player p = (Player) e.getWhoClicked();
            klannaming.add(p.getName());
            p.sendMessage("Napis meno klanu");

}
        } else if (e.getInventory().getName().equalsIgnoreCase("Tvôj Klan")) {
            if (e.getCurrentItem().getItemMeta().getDisplayName().contains("Rozpustiť")) {
                e.setCancelled(true);
                e.getWhoClicked().closeInventory();
                Player p = (Player) e.getWhoClicked();
            klandisband.add(p.getName());
            p.sendMessage("Napis meno klanu");
            }
        }
    }
            @EventHandler
                public void onKlanName(AsyncPlayerChatEvent e){
                Msg msg = new Msg();
                Player p = e.getPlayer();
                if (klannaming.contains(p.getName())) {
                    e.setCancelled(true);
                    p.sendMessage(ChatColor.RED + "[" + ChatColor.GOLD + "Klans" + ChatColor.RED + "]" 
                + ChatColor.GOLD + " Klán " + e.getMessage() + " bol úspešne vytvorený!");
                    klannaming.remove(p.getName());
                    plugin.clans.loadFile();
                    if (plugin.clans.getString(e.getMessage().toLowerCase() + ".owner") == null) {
                        new Clans(plugin).createClan(p.getName(), e.getMessage());
                       
                    }
                } else {
                    return;
                }
                }
           
            @EventHandler
            public void onKlanDisband(AsyncPlayerChatEvent e){
            Msg msg = new Msg();
            Player p = e.getPlayer();
            if (klandisband.contains(p.getName())) {
                e.setCancelled(true);
                p.sendMessage(ChatColor.RED + "[" + ChatColor.GOLD + "Klans" + ChatColor.RED + "]" 
            + ChatColor.GOLD + " Klán " + e.getMessage() + " bol úspešne rozpusteny!");
                klandisband.remove(p.getName());
                plugin.clans.loadFile();
                if (plugin.clans.getString(e.getMessage().toLowerCase() + ".owner") == null) {
                    new Clans(plugin).createClan(p.getName(), e.getMessage());
                   
                } else {
                    msg.sendRedMessage(p, "Tento klan uz existuje!");
                }
            } else {
                return;
            }
            }
    }

Inv (Inventory):

Code:

package me.domi.test;

import java.util.Arrays;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.DyeColor;
import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.event.player.AsyncPlayerChatEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.material.Wool;
import org.bukkit.plugin.Plugin;

public class Inv implements Listener {

    private Inventory Meghivasok;
    private Inventory InKlan;
    private Inventory Alap;
  
    public Main main;
    private ItemStack c, b, m, v, r;
  
       public Inv(Plugin p) {
            
            Alap = Bukkit.getServer().createInventory(null, 9, "Klan");
             
                c = createItem(DyeColor.GREEN, ChatColor.GREEN + "Vytvoriť");
                b = createItem(DyeColor.GREEN, ChatColor.YELLOW + "Vstúpiť");
                m = createItem(DyeColor.RED, ChatColor.RED + "Pozvánky");
             
                Alap.setItem(2, c);
                Alap.setItem(4, b);
                Alap.setItem(6, m);
              
                Meghivasok = Bukkit.getServer().createInventory(null, 54, "Pozvánky");
              
                v = createItem2(Material.BARRIER, ChatColor.YELLOW + "Späť");
                r = createItem2(Material.BARRIER, ChatColor.DARK_RED + "Rozpustiť");
             
                Meghivasok.setItem(46, v);
              
                InKlan = Bukkit.getServer().createInventory(null, 54, "Tvôj Klan");
              
                Bukkit.getServer().getPluginManager().registerEvents(this, p);
        }
     
        private ItemStack createItem(DyeColor dc, String name) {
                ItemStack i = new Wool(dc).toItemStack(1);
                ItemMeta im = i.getItemMeta();
                im.setDisplayName(name);
                im.setLore(Arrays.asList(""));
                i.setItemMeta(im);
                return i;
        }
      
        private ItemStack createItem2(Material mat, String name) {
            ItemStack i = new ItemStack(mat);
            ItemMeta im = i.getItemMeta();
            im.setDisplayName(name);
            im.setLore(Arrays.asList(""));
            i.setItemMeta(im);
            i.setAmount(1);
            return i;
    }
      
        public void show(Player player) {
            player.openInventory(Alap);
    }
}

and Clans:

Code:

package me.domi.test;

import java.util.ArrayList;
import java.util.List;

import org.bukkit.entity.Player;

import me.domi.test.common.Msg;

public class Clans {

    public Main plugin;
  
    public Clans(Main plugin) {
        this.plugin = plugin;
    }
  
    public void createClan(String player, String name) {
        List<String> members = new ArrayList<String>();
        members.add(player);
        plugin.clans.loadFile();
        plugin.clans.set(name.toLowerCase() + ".owner", player);
        plugin.clans.set(name.toLowerCase() + ".name", name);
        plugin.clans.set(name.toLowerCase() + ".members", members);
        plugin.clans.saveFile();
    }
  
    public void disbandClan(String player, String name) {
      
        plugin.clans.loadFile();
        if (plugin.clans.getString(name.toLowerCase() + ".owner").equals(player)) {
            plugin.clans.set(name.toLowerCase(), null);
            plugin.clans.saveFile();
        } else {
            Player p = plugin.getServer().getPlayer(player);
                new Msg().sendRedMessage(p, "Nie si velitel tohto klanu, takže nemôžes rozpustiť!");
        }
      
    }
}

Error:

Code:

>pl
[13:59:58 INFO]: Plugins (1): MC_Craft_Test
[14:00:07 INFO]: UUID of player dominikremes is 8bc27b14-3a65-39c6-98e7-4de248973d0d
[14:00:08 INFO]: dominikremes[/127.0.0.1:63275] logged in with entity id 219 at ([world]-79.70565631163656, 103.0, 259.63856184056215)
[14:00:15 INFO]: dominikremes issued server command: /test
[14:00:30 ERROR]: Could not pass event AsyncPlayerChatEvent to MC_Craft_Test v1.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-e000104-4cb3258]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-e000104-4cb3258]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-e000104-4cb3258]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:484) [spigot.jar:git-Spigot-e000104-4cb3258]
        at net.minecraft.server.v1_9_R1.PlayerConnection.chat(PlayerConnection.java:1272) [spigot.jar:git-Spigot-e000104-4cb3258]
        at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1210) [spigot.jar:git-Spigot-e000104-4cb3258]
        at net.minecraft.server.v1_9_R1.PacketPlayInChat$1.run(PacketPlayInChat.java:39) [spigot.jar:git-Spigot-e000104-4cb3258]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_101]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_101]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_101]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_101]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_101]
Caused by: java.lang.NullPointerException
        at me.domi.test.Listeners.onKlanName(Listeners.java:51) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_101]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_101]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_101]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-e000104-4cb3258]

Thanks for Help

 

I want to write there who is in witch clan and witch "rank" is the player. If owner than member + owner if just member then member and later there will be smething bigger then member and smaller then owner and that will be member + everithing wha is smaller than he

And the error is in line 51 in class Listeners

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

@dominikremes
Well, you posted the Msg class twice instead of the Listeners class, so it's hard to say what's wrong. Also, show us the full stacktrace of the error.

 

@AlvinB
Ok sorry I corrected it and there is the error too

 

@dominikremes
If you have an error, post it. Else if your problem has been solved, mark this thread as solved.

 

@Zombie_Striker
But my error is not sloved I corrected something in post, because I post class msg 2 times and listeners 0 times