Could not pass event PlayerJoinEvent

Discussion in 'Plugin Development' started by commandmaster_1, Feb 4, 2021.

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  1. Offline

    commandmaster_1

    Hey guys,
    I have a little problem.
    Whenever I join my Server I got this this error:


    Code:
    [20:38:19] [User Authenticator #1/INFO]: UUID of player commandmaster_1 is 1484aa32-2a55-44e0-91c6-92896b500a94
[20:38:19] [Server thread/ERROR]: Could not pass event PlayerJoinEvent to Tests1 v1.0-SNAPSHOT
org.bukkit.event.EventException: null
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[spigot.jar:git-Spigot-800b93f-8160e29]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot.jar:git-Spigot-800b93f-8160e29]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:529) [spigot.jar:git-Spigot-800b93f-8160e29]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:514) [spigot.jar:git-Spigot-800b93f-8160e29]
    at net.minecraft.server.v1_15_R1.PlayerList.a(PlayerList.java:176) [spigot.jar:git-Spigot-800b93f-8160e29]
    at net.minecraft.server.v1_15_R1.LoginListener.c(LoginListener.java:154) [spigot.jar:git-Spigot-800b93f-8160e29]
    at net.minecraft.server.v1_15_R1.LoginListener.tick(LoginListener.java:53) [spigot.jar:git-Spigot-800b93f-8160e29]
    at net.minecraft.server.v1_15_R1.NetworkManager.a(NetworkManager.java:220) [spigot.jar:git-Spigot-800b93f-8160e29]
    at net.minecraft.server.v1_15_R1.ServerConnection.c(ServerConnection.java:129) [spigot.jar:git-Spigot-800b93f-8160e29]
    at net.minecraft.server.v1_15_R1.MinecraftServer.b(MinecraftServer.java:1105) [spigot.jar:git-Spigot-800b93f-8160e29]
    at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:399) [spigot.jar:git-Spigot-800b93f-8160e29]
    at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:984) [spigot.jar:git-Spigot-800b93f-8160e29]
    at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:824) [spigot.jar:git-Spigot-800b93f-8160e29]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_281]
Caused by: java.lang.NullPointerException
    at de.david.tests1.listeners.JoinListener.onJoin(JoinListener.java:23) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_281]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_281]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_281]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_281]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[spigot.jar:git-Spigot-800b93f-8160e29]
    ... 13 more
    My PlayerJoinListener:

    Code:
    package de.david.tests1.listeners;

import de.david.tests1.Main;
import de.david.tests1.util.FW;
import de.david.tests1.util.Message;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;

public class JoinListener implements Listener {

    @EventHandler
    public void onJoin(PlayerJoinEvent e){

        e.setJoinMessage(null);

        if(!e.getPlayer().hasPlayedBefore()){
            e.setJoinMessage(Message.MSG_FirstJoined.getMessage().replace("{Player}", e.getPlayer().getName()));
        } else
        e.setJoinMessage(Message.MSG_Joined.getMessage().replace("{Player}", e.getPlayer().getName()));

        FW fw = new FW("plugin//" + Main.getInstance().getName() + "//Users//", e.getPlayer().getUniqueId().toString() + ".yml");
        if(fw.exist()) {
            fw.setValue("joined", fw.getInt("joined") + 1);
        }else
            fw.setValue("joined", 1);
        fw.save();
        e.getPlayer().sendMessage(Message.Prefix.getRawMessage() + "Du bist schon " + fw.getInt("joined") + " mal auf dem Server gewesen.");

    }
}
    My Main:

    Code:
    package de.david.tests1;

import de.david.tests1.listeners.JoinListener;
import org.bukkit.Bukkit;
import org.bukkit.event.Listener;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public final class Main extends JavaPlugin {
    private static Main instance = null;

    public static Main getInstance(){
        return instance;
    }

    @Override
    public void onEnable() {
    ListenerRegestration();

    }

    @Override
    public void onDisable() {

    }

    private void ListenerRegestration() {
        PluginManager pluginManager = Bukkit.getPluginManager();
        pluginManager.registerEvents(new JoinListener(),this);
    }
}
    This is my filewriter:

    Code:
    package de.david.tests1.util;

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

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Set;

public class FW {


    private File f;
    private YamlConfiguration c;

    public FW(String FilePath, String FileName){
        this.f = new File(FilePath, FileName);
        this.c = YamlConfiguration.loadConfiguration(this.f);
    }

    public FW setValue(String ValuePath, Object Value){
        c.set(ValuePath, Value);
        return this;
    }
    public boolean exist(){
        return f.exists();
    }
    public Object getObject(String ValuePath){
        return c.get(ValuePath);
    }

    public int getInt(String ValuePath) {
       return c.getInt(ValuePath);
    }
    public String getSring(String ValuePath) {
        return c.getString(ValuePath);
    }
    public boolean getBoolean(String ValuePath) {
        return c.getBoolean(ValuePath);
    }
    public List<String> getStringList(String ValuePath) {
        return c.getStringList(ValuePath);
    }
    public long getLong(String ValuePath) {
        return c.getLong(ValuePath);
    }
    public Set<String> getKeys(boolean deep) {
        return c.getKeys(deep);
    }
    public ConfigurationSection getConfigurationSection(String Section){
        return c.getConfigurationSection(Section);
    }
    public FW save(){
        try {
            this.c.save(this.f);
        } catch (IOException e) {
        }
        return this;
    }
}
     
    Last edited: Feb 4, 2021
    commandmaster_1, Feb 4, 2021
    #1
  2. Offline

    commandmaster_1

    @timtower I programnot yet that long.
    Can you please explain to me what I should change to fix the problem
    ?
     
    Last edited: Feb 5, 2021
    commandmaster_1, Feb 5, 2021
    #3
  3. Offline

    timtower Administrator Administrator Moderator

    timtower, Feb 4, 2021
    #4
  4. Offline

    timtower Administrator Administrator Moderator

    In your onEnable:
    instance = this

    Or remove it and pass the value using constructors instead of the unneeded static usage.
     
    timtower, Feb 5, 2021
    #4
  5. Offline

    commandmaster_1

    Now my Main looks like this,
    but i get the same error
    Code:
    package de.david.tests1;

import de.david.tests1.listeners.JoinListener;
import org.bukkit.Bukkit;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public final class Main extends JavaPlugin {
    private static Main instance = null;

    public static Main getInstance(){
        return instance;
    }

    public Main() {
    }

    @Override
    public void onEnable() {
    instance = this;
    ListenerRegistration();

    }

    @Override
    public void onDisable() {

    }

    private void ListenerRegistration() {
        PluginManager pluginManager = Bukkit.getPluginManager();
        pluginManager.registerEvents(new JoinListener(),this);
    }
}
     
    commandmaster_1, Feb 5, 2021
    #5
  6. Offline

    timtower Administrator Administrator Moderator

    timtower, Feb 5, 2021
    #6
  7. Offline

    commandmaster_1

    The same Error
    Code:
    package de.david.tests1;

import de.david.tests1.listeners.JoinListener;
import org.bukkit.Bukkit;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public final class Main extends JavaPlugin {
    private static Main instance = null;

    public static Main getInstance(){
        return instance;
    }


    @Override
    public void onEnable() {
        instance = this;
        ListenerRegistration();

    }

    @Override
    public void onDisable() {

    }

    private void ListenerRegistration() {
        PluginManager pluginManager = Bukkit.getPluginManager();
        pluginManager.registerEvents(new JoinListener(),this);
    }
}
     
    commandmaster_1, Feb 5, 2021
    #7
  8. Offline

    timtower Administrator Administrator Moderator

    @commandmaster_1 Remove all static stuff. You don't need it.
    Call "new JoinListener(this)"
    Then you can pass the main class along.
     
    timtower, Feb 5, 2021
    #8
  9. Offline

    commandmaster_1

    @timtower I have remove it but what I need to call "new JoinListener(this)"?


    Code:
    package de.david.tests1;

import de.david.tests1.listeners.JoinListener;
import org.bukkit.Bukkit;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public final class Main extends JavaPlugin {


    @Override
    public void onEnable() {

        PluginManager pluginManager = Bukkit.getPluginManager();
        pluginManager.registerEvents(new JoinListener(), this);

    }

}
     
    commandmaster_1, Feb 5, 2021
    #9
  10. Offline

    timtower Administrator Administrator Moderator

    @commandmaster_1 Where do you think? I would try the current "new Joinlistener()"
     
    timtower, Feb 5, 2021
    #10
  11. Offline

    commandmaster_1

    Always the same Error
    My Main now
    Code:
    package de.david.tests1;

import de.david.tests1.listeners.JoinListener;
import org.bukkit.Bukkit;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public final class Main extends JavaPlugin {
    private static Main plugin;

    @Override
    public void onEnable() {
        plugin = this;
        PluginManager pluginManager = Bukkit.getPluginManager();
        pluginManager.registerEvents(new JoinListener(), this);

    }
        public static Main getPlugin() {
            return plugin;
        }
}
     
    commandmaster_1, Feb 5, 2021
    #11
  12. Offline

    Newdel

    You still didn't do that
     
    Newdel, Feb 5, 2021
    #12
  13. Offline

    timtower Administrator Administrator Moderator

    timtower, Feb 5, 2021
    #13
  14. Offline

    commandmaster_1

    @timtower Found the mistake thanks for your help.
     
    Last edited: Feb 6, 2021
    commandmaster_1, Feb 6, 2021
    #14
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