Configuration check giving error

When a player logs on, I am testing whether they have been registered in the config, and if they haven't, it adds some data for them.

Code:

Code:

package me.mas.mageguilds.Join;

import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import me.mas.mageguilds.MageGuilds;

public class NewJoin implements Listener {
 
    private static MageGuilds Plugin;
 
    @EventHandler
    public void onJoin(PlayerJoinEvent e){
        Player p = (Player) e.getPlayer();
        if (Plugin.getConfig().contains("players." + p.getUniqueId())){
            return;
        }else{
            Plugin.getConfig().set("players." + p.getUniqueId() + ".played", true);
         
            //Class choosing stuff
        }
    }
}

Error:

Code:

[16:24:40 ERROR]: Could not pass event PlayerJoinEvent to MageGuilds v1.0.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerList.onPlayerJoin(PlayerList.java:282) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerList.a(PlayerList.java:142) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.LoginListener.b(LoginListener.java:115) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.LoginListener.c(LoginListener.java:53) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.NetworkManager.a(NetworkManager.java:222) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.ServerConnection.c(SourceFile:168) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:745) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.7.0_79]
Caused by: java.lang.NullPointerException
        at me.mas.mageguilds.Join.NewJoin.onJoin(NewJoin.java:16) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_79]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_79]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_79]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_79]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        ... 14 more

Also, is there a way I can set the name of a player's enderchest? I looked at some tutorials made a while ago but none seemed to work


Any help? Thanks

 

@ItsMas_
https://bukkit.org/threads/how-to-r...ubleshoot-your-own-plugins-by-yourself.32457/
Something is null on line 16. Did you post all the class?

 

Bukkit Forums removed a blank line, line 16 is actually what is on line 17.

EDT: Reformated it.

Line 16 is "if (Plugin.getConfig().contains("players." + p.getUniqueId())){

 

@ItsMas_ Try creating a constructor that passes the Main Plugin to this class instead of using static. Also can you post here your config?

 

your variable 'plugin' is null.

also please follow naming conventions.

 

@ItsMas_
Please don't abuse static; if you use static for move around an object instead of passing the instance through a constructor, you are being lazy.

As has been said, plugin is null. Manually set it through a constructor.

 

Okay getting the same error

Updated code:

Code:

package me.mas.mageguilds.Join;

import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;

import me.mas.mageguilds.MageGuilds;

public class NewJoin implements Listener {
  
    private MageGuilds plugin;
  
    public NewJoin(MageGuilds plugin){
        this.plugin = plugin;
    }
  
    @EventHandler
    public void onJoin(PlayerJoinEvent e){
        Player p = (Player) e.getPlayer();
        if (plugin.getConfig().contains("players." + p.getUniqueId())){
            return;
        }else{
            plugin.getConfig().set("players." + p.getUniqueId() + ".played", true);
          
            //Class choosing stuff
        }
    }
}

 

@ItsMas_
{EDIT} You forgot to add "p.getUniqueID().toString()" What you are currently doing is printing out the memory space the UUID is taking up, not the actual UUID.

 

What if I told that it doesn't make a difference? Appending Strings and other Objects together still call toString() on the Object.

@ItsMas_ Post updated stacktrace

 

try:

Code:

if(Plugin.getConfig.getString("players."+p.getUniqueId()!=null)return;

if that doesnt work try what the others said:

Code:

if(Plugin.getConfig.getString("players."+p.getUniqueId().toString()!=null)return;

^Shouldnt be different then the first one though

 

Still doesn't work ;-;

Error

Code:

[16:44:14 ERROR]: Could not pass event PlayerJoinEvent to MageGuilds v1.0.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerList.onPlayerJoin(PlayerList.java:282) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerList.a(PlayerList.java:142) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.LoginListener.b(LoginListener.java:115) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.LoginListener.c(LoginListener.java:53) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.NetworkManager.a(NetworkManager.java:222) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.ServerConnection.c(SourceFile:168) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:745) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.7.0_79]
Caused by: java.lang.NullPointerException
        at me.mas.mageguilds.Join.NewJoin.onJoin(NewJoin.java:21) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_79]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_79]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_79]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_79]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        ... 14 more

 

@ItsMas_
It may also help to research on what causes NPEs