Error when getting Main class in other class

Whenever I launch the server with the plugin installed, I get this error:

Code:

org.bukkit.plugin.InvalidPluginException: java.lang.IllegalStateException: Cannot get plugin for class me.AwesomeFishh.ShardRewards.Main from a static initializer'

Which is caused by 2 lines of my code, Line 7 in ConfigManager and 14 in Main:

Code:

Caused by: java.lang.IllegalStateException: Cannot get plugin for class me.AwesomeFishh.ShardRewards.Main from a static initializer
        at org.bukkit.plugin.java.JavaPlugin.getPlugin(JavaPlugin.java:531) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at me.AwesomeFishh.ShardRewards.Configurations.ConfigManager.<init>(ConfigManager.java:7) ~[?:?]
        at me.AwesomeFishh.ShardRewards.Main.<init>(Main.java:14) ~[?:?]

This is the code on those lines:

Main:

Code:

public String prefix = ChatColor.GOLD + "[ShardRewards]";
public ConfigManager configManager = new ConfigManager();
public ChestConfig chestConfig = new ChestConfig();

ConfigManager:

Code:

private Main plugin = Main.getPlugin(Main.class);
ChestConfig chestClass = plugin.chestConfig;

I have the line from ConfigManager in several other classes, and they do not give any errors.

Can anyone help me out here?

EDIT: used Code thingys, and here's the whole project: https://github.com/AwesomeFishh/ShardRewards

 

Just added the github link for the whole project in the edit.

 

I'm kinda new to java, and this is how a tutorial did it, so what exactly do you mean by that?

 

So I added some code:

Code:

Main plugin;

public classname(Main plugin) {
        this.plugin = plugin;
    }

And also whenever I did the new class thing I added new Class(this).

Now I get nullpointerexceptions on line 8 in Main and line 14 in ConfigManager.

 

Well it gives it on:

ConfigManager:

Code:

ChestConfig chestClass = plugin.chestConfig;

And Main:

Code:

public ConfigManager configManager = new ConfigManager(this);

Does that mean that 'this' (which is the plugin right?) causes the nullpointer, and in the configmanager the same story, because the plugin is null?

How can I fix that?

 

@timtower

Code:

package me.AwesomeFishh.ShardRewards;

import org.bukkit.ChatColor;
import org.bukkit.plugin.java.JavaPlugin;

import me.AwesomeFishh.ShardRewards.Commands.RegisterChest;
import me.AwesomeFishh.ShardRewards.Configurations.ChestConfig;
import me.AwesomeFishh.ShardRewards.Configurations.ConfigManager;
import me.AwesomeFishh.ShardRewards.Events.Events;

public class Main extends JavaPlugin {
   
    public String prefix = ChatColor.GOLD + "[ShardRewards]";
    public ConfigManager configManager = new ConfigManager(this);
    public ChestConfig chestConfig = new ChestConfig(this);
   
    public void onEnable() {
        getServer().getPluginManager().registerEvents(new Events(this), this);
        getCommand("registerchests").setExecutor(new RegisterChest(this));
        configManager.setupChestFile();
        loadConfig();
        getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "[ShardRewards] Enabled!");
    }
   
    public void onDisable() {
        saveConfig();
        getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "[ShardRewards] Disabled!");
    }
   
    public void loadConfig() {
        getConfig().addDefault("chests.1.item", "COOKED_BEEF");
        getConfig().addDefault("chests.1.amount", 1);
        getConfig().addDefault("chests.1.name", "&6Steak");
        getConfig().addDefault("chests.1.command.1", "/give %p minecraft:steak 1");
        getConfig().addDefault("chests.1.command.2", "/spawn %p");
        getConfig().addDefault("chests.1.shardscost", "1");
        getConfig().getDefaults().options().copyDefaults(true);
        saveConfig();
    }

}

Code:

package me.AwesomeFishh.ShardRewards.Configurations;

import me.AwesomeFishh.ShardRewards.Main;

public class ConfigManager {
   
    Main plugin;
    ChestConfig chestClass = plugin.chestConfig;
   
    public ConfigManager(Main plugin) {
        this.plugin = plugin;
    }
   
    public void setupChestFile() {
        chestClass.createChests();
        chestClass.saveChestsCfg();
        chestClass.reloadChestsCfg();
    }

}

 

@timtower Updated the code a bit, now put this (with some different class names ofc)

Code:

Main plugin;
    ChestConfig chestConfig;
    ConfigManager configManager;

    public RegisterChest(Main plugin) {
        this.plugin = plugin;
        configManager = plugin.configManager;
        chestConfig = plugin.chestConfig;
    }

at the start of every class.

I get a nullpointer in line22 on Main (which is the getCommand line):

Code:

package me.AwesomeFishh.ShardRewards;

import org.bukkit.ChatColor;
import org.bukkit.plugin.java.JavaPlugin;

import me.AwesomeFishh.ShardRewards.Commands.RegisterChest;
import me.AwesomeFishh.ShardRewards.Configurations.ChestConfig;
import me.AwesomeFishh.ShardRewards.Configurations.ConfigManager;
import me.AwesomeFishh.ShardRewards.Events.Events;

public class Main extends JavaPlugin {

    public String prefix = ChatColor.GOLD + "[ShardRewards]";
    public ConfigManager configManager;
    public ChestConfig chestConfig;
 
    public void onEnable() {

        configManager = new ConfigManager(this);
        chestConfig = new ChestConfig(this);
        this.getServer().getPluginManager().registerEvents(new Events(this), this);
        this.getCommand("registerchest").setExecutor(new RegisterChest(this));
        configManager.setupChestFile();
        loadConfig();
        getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "[ShardRewards] Enabled!");
    }
 
    public void onDisable() {
        saveConfig();
        getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "[ShardRewards] Disabled!");
    }
 
    public void loadConfig() {
        getConfig().addDefault("chests.1.item", "COOKED_BEEF");
        getConfig().addDefault("chests.1.amount", 1);
        getConfig().addDefault("chests.1.name", "&6Steak");
        getConfig().addDefault("chests.1.command.1", "/give %p minecraft:steak 1");
        getConfig().addDefault("chests.1.command.2", "/spawn %p");
        getConfig().addDefault("chests.1.shardscost", "1");
        getConfig().getDefaults().options().copyDefaults(true);
        saveConfig();
    }

}

RegisterChest.java:

Code:

package me.AwesomeFishh.ShardRewards.Commands;

import org.bukkit.ChatColor;
import org.bukkit.block.Block;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

import me.AwesomeFishh.ShardRewards.Main;
import me.AwesomeFishh.ShardRewards.Configurations.ChestConfig;
import me.AwesomeFishh.ShardRewards.Configurations.ConfigManager;

public class RegisterChest implements CommandExecutor {

    Main plugin;
    ChestConfig chestConfig;
    ConfigManager configManager;

    public RegisterChest(Main plugin) {
        this.plugin = plugin;
        configManager = plugin.configManager;
        chestConfig = plugin.chestConfig;
    }

    @SuppressWarnings("deprecation")
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String s, String[] args) {

        if (cmd.getName().equalsIgnoreCase("registerchest")) {
            if (sender instanceof Player) {
                Player player = (Player) sender;
                if (args.length == 1) {
                    Block block = player.getTargetBlock(null, 200);
                    if (args[0].matches("^[0-9]*$")) {
                        int id = Integer.parseInt(args[0]);
                        if (!chestConfig.getChestsCfg().contains("chest." + id)) {
                            if (block.getType().getId() == 54) {
                                chestConfig.getChestsCfg().set("chest." + id + ".world", player.getWorld());
                                chestConfig.getChestsCfg().set("chest." + id + ".x", block.getLocation().getX());
                                chestConfig.getChestsCfg().set("chest." + id + ".y", block.getLocation().getY());
                                chestConfig.getChestsCfg().set("chest." + id + ".z", block.getLocation().getZ());
                                player.sendMessage(plugin.prefix + ChatColor.YELLOW + " Chest with id " + id
                                        + "has been successfully registered!");
                            } else {
                                player.sendMessage(plugin.prefix + ChatColor.YELLOW
                                        + " Please look at a chest while using this command!");
                            }
                        } else {
                            player.sendMessage(
                                    plugin.prefix + ChatColor.YELLOW + " A chest with that ID already exists!");
                        }
                    } else {
                        player.sendMessage(plugin.prefix + ChatColor.RED + " Please specificy a number for the ID!");
                    }
                }
            }
        }

        return false;
    }

}

 

@timtower Well shit.. I totally forgot that, didn't think that would cause a nullpointer though.

I got another nullpointer but fixed it already, but I got a question about it:

Code:

package me.AwesomeFishh.ShardRewards.Configurations;

import me.AwesomeFishh.ShardRewards.Main;

public class ConfigManager {

    Main plugin;
    ChestConfig chestClass;
   
    public ConfigManager(Main plugin) {
        this.plugin = plugin;
    }

    public void setupChestFile() {
        chestClass = plugin.chestConfig;
        chestClass.createChests();
        chestClass.saveChestsCfg();
        chestClass.reloadChestsCfg();
    }

}

If I put the chestClass = plugin.chestConfig; either above, below or in the constructor, it gives a null error. Why does it not when I put it like this, in the setupChestFile method?

 

@timtower In the setupChestFile everything works fine, but when I put it in the constructor it gives nullPointerExceptions.

 

Well, in the code 3 posts above, when I put chestClass = plugin.chestConfig; in the constructor, chestClass.createChests(); throws a nullpointer, which I'm assuming is because chestClass == null, because createChests works fine when chestClass = plugin.chestConfig; is in the setupChestFile() method.