NullPointerException on create Config

Hello,

I have a problem with my plugin. I create a file per player on connexion but:

Code:

[23:34:22 ERROR]: Could not pass event PlayerJoinEvent to Utilities v1.0.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.PlayerList.onPlayerJoin(PlayerList.java:333) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.PlayerList.a(PlayerList.java:159) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.LoginListener.b(LoginListener.java:144) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.LoginListener.E_(LoginListener.java:54) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.NetworkManager.a(NetworkManager.java:233) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.ServerConnection.c(ServerConnection.java:140) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:832) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:673) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:572) [spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_112]
Caused by: java.lang.ExceptionInInitializerError
        at fr.yohannlog.utilities.Utilities.onPlayerJoin(Utilities.java:55) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_112]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_112]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_112]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_112]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        ... 14 more
Caused by: java.lang.NullPointerException
        at fr.yohannlog.utilities.config.PlayerFile.<clinit>(PlayerFile.java:15) ~[?:?]
        at fr.yohannlog.utilities.Utilities.onPlayerJoin(Utilities.java:55) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_112]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_112]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_112]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_112]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.10.2.jar:git-Spigot-a9631d2-67b2424]
        ... 14 more

Main class:

Code:

public class Utilities  extends JavaPlugin implements Listener{

    private static Utilities plugin;
    Logger log = Logger.getLogger("Utilities");

    //FILES
   // public static MyMenuConfig configFile;
   // public static YamlConfiguration config;

    @Override
    public void onEnable() {
        log.info("JFIUHFBZHFBRGREGHERE");
        getServer().getPluginManager().registerEvents(this, this);

    }

    @Override
    public void onDisable(){

    }




    public static Utilities getInstance(){
        return plugin;
    }

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent e){
        Player player = e.getPlayer();
        Bukkit.broadcastMessage(player.getDisplayName());
        PlayerFile.initMapData(player);
    }
}

Player File:

Code:

public class PlayerFile {
    public static File mapsFolder = new File(Utilities.getInstance().getDataFolder() + "/players");


    public static void initMapData(Player p) {
        try {
            if (!mapsFolder.exists()) mapsFolder.mkdir();

            File mapFile = new File(mapsFolder, p.getUniqueId()+ ".yml");
            FileConfiguration mapConf = YamlConfiguration.loadConfiguration(mapFile);
            if (!mapFile.exists()) {
                mapFile.createNewFile();

                mapConf.addDefault("UUID", p.getUniqueId().toString());
                mapConf.addDefault("Name", p.getDisplayName());
                mapConf.addDefault("IP", p.getAddress());
                mapConf.addDefault("Frozen", false);
                mapConf.addDefault("Banned.ban", false);
                mapConf.addDefault("Banned.reason", "");
                mapConf.addDefault("Banned_info", null);
                mapConf.addDefault("Muted", false);
                mapConf.addDefault("Muted_info", null);
              //  mapConf.addDefault("Balance",  EconomyManager.getBalance(p));
                mapConf.addDefault("Gamemode", p.getGameMode().toString());
                mapConf.addDefault("Vanish", false);
                mapConf.addDefault("Health", p.getHealth() /2);
                mapConf.addDefault("Feed", p.getFoodLevel());
                mapConf.addDefault("Fly", false);
                mapConf.addDefault("Level.amount", p.getLevel());
                mapConf.addDefault("Level.lock", false);
                mapConf.addDefault("Effects", p.getActivePotionEffects());
                mapConf.addDefault("Position.x", p.getLocation().getX());
                mapConf.addDefault("Position.y", p.getLocation().getY());
                mapConf.addDefault("Position.z", p.getLocation().getZ());
                mapConf.addDefault("Maintenance_accept", false);
                mapConf.addDefault("Mention.activated", true);
                mapConf.addDefault("Mention.text.color", ChatColor.WHITE.toString());
                mapConf.addDefault("Mention.text.bold", false);
                mapConf.addDefault("Mention.text.underline", false);
                mapConf.addDefault("Mention.text.italic", false);
                mapConf.addDefault("Mention.sound.activated", true);
                mapConf.addDefault("Mention.sound.type", "BLOCK_GRASS_HIT");
                mapConf.addDefault("Mention.sound.pitch", 1.0F);
                //  mapConf.options().header("IKDEIFH");
                mapConf.addDefault("Silent_join", false);
                mapConf.addDefault("View_Damage", false);
                mapConf.addDefault("Damage_view", false);

                mapConf.save(mapFile);
            }
        } catch (Exception e) {
            System.err.println("An error occured while initializing Player (" + p + ")");
            System.err.println("Please report this error: " + e.getMessage());
            e.printStackTrace();
        }
    }


}

Yohann

 

Utilities class? I think it is initializing mapsFolder wrong

 

Because this is static, it is trying to get the plugin before the plugin is even enabled. That means the instance would be null and would throw an NPE (which is what is happening).

Only set the file variable AFTER the plugin has been enabled.

BTW: Your "Utility" class should not be the main class. Your main class should control all the features for your plugin, not be a Utility for other classes. I would recommend changing the name/ idea for this class.

 

It works by i have any text in the config ...

Main:

Code:

public class Main extends JavaPlugin implements Listener{


    private static Main plugin;
    Logger log = Logger.getLogger("Utilities");
    private static PlayerFile pf;


    //FILES
   // public static MyMenuConfig configFile;
   // public static YamlConfiguration config;

    @Override
    public void onEnable() {
        plugin = this;
        log.info("JFIUHFBZHFBRGREGHERE");
        getPluginManager().registerEvents(this, this);

    }
    public static Main getInstance(){
        return plugin;
    }

    @Override
    public void onDisable(){

    }



    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent e){
        Player player = e.getPlayer();
        Bukkit.broadcastMessage(player.getDisplayName());
        PlayerFile.initMapData(player);
    }
}

File:

Code:

package fr.yohannlog.utilities.config;

import fr.yohannlog.utilities.Main;
import org.bukkit.ChatColor;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Player;

import java.io.File;

/**
* @author Yohannlog
*/
public class PlayerFile {
    private static File mapsFolder = new File(Main.getInstance().getDataFolder() + "/players");


    public static void initMapData(Player p) {
        try {
            if (!mapsFolder.exists()) mapsFolder.mkdir();

            File mapFile = new File(mapsFolder, p.getUniqueId()+ ".yml");
            FileConfiguration mapConf = YamlConfiguration.loadConfiguration(mapFile);
            if (!mapFile.exists()) {

                mapFile.createNewFile();
                mapConf.addDefault("UUID", p.getUniqueId().toString());
                mapConf.addDefault("Name", p.getDisplayName());
                mapConf.addDefault("IP", p.getAddress());
                mapConf.addDefault("Frozen", false);
                mapConf.addDefault("Banned.ban", false);
                mapConf.addDefault("Banned.reason", "");
                mapConf.addDefault("Banned_info", null);
                mapConf.addDefault("Muted", false);
                mapConf.addDefault("Muted_info", null);
              //  mapConf.addDefault("Balance",  EconomyManager.getBalance(p));
                mapConf.addDefault("Gamemode", p.getGameMode().toString());
                mapConf.addDefault("Vanish", false);
                mapConf.addDefault("Health", p.getHealth() /2);
                mapConf.addDefault("Feed", p.getFoodLevel());
                mapConf.addDefault("Fly", false);
                mapConf.addDefault("Level.amount", p.getLevel());
                mapConf.addDefault("Level.lock", false);
                mapConf.addDefault("Effects", p.getActivePotionEffects());
                mapConf.addDefault("Position.x", p.getLocation().getX());
                mapConf.addDefault("Position.y", p.getLocation().getY());
                mapConf.addDefault("Position.z", p.getLocation().getZ());
                mapConf.addDefault("Maintenance_accept", false);
                mapConf.addDefault("Mention.activated", true);
                mapConf.addDefault("Mention.text.color", ChatColor.WHITE.toString());
                mapConf.addDefault("Mention.text.bold", false);
                mapConf.addDefault("Mention.text.underline", false);
                mapConf.addDefault("Mention.text.italic", false);
                mapConf.addDefault("Mention.sound.activated", true);
                mapConf.addDefault("Mention.sound.type", "BLOCK_GRASS_HIT");
                mapConf.addDefault("Mention.sound.pitch", 1.0F);
                //  mapConf.options().header("IKDEIFH");
                mapConf.addDefault("Silent_join", false);
                mapConf.addDefault("View_Damage", false);
                mapConf.addDefault("Damage_view", false);

                mapConf.save(mapFile);
            }
        } catch (Exception e) {
            System.err.println("An error occured while initializing Player (" + p + ")");
            System.err.println("Please report this error: " + e.getMessage());
            e.printStackTrace();
        }
    }


}

 

@yohannlog You forgot to copyDefaults.