java.lang.IllegalArgumentException: File cannot be null error

Hey guys,

After about 2 days of research on this error, and with no luck, I've resorted to coming here for help.

Basically, I get this error when trying to make a new integer variable, at least that's what the stacktrace tells me.

Here is the class file:

Code:java

package com.argonathrpg.minecraft.forcespawn;
 
 
// import java.io.File;
// import java.util.logging.Logger;
// import org.bukkit.Bukkit;
import org.bukkit.Location;
// import org.bukkit.configuration.file.FileConfiguration;
// import org.bukkit.ChatColor;
// import org.bukkit.World;
// import org.bukkit.command.Command;
// import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
 
public final class ForceSpawn extends JavaPlugin implements Listener {
    public void loadConfiguration(){
        //See "Creating you're defaults"
        getConfig().options().copyDefaults(true); // NOTE: You do not have to use "plugin." if the class extends the java plugin
        //Save the config whenever you manipulate it
        saveConfig();
        String path = "spawnlocation.x";
        getConfig().addDefault(path, "1337");
        path = "spawnlocation.y";
        getConfig().addDefault(path, "1337");
        path = "spawnlocation.z";
        getConfig().addDefault(path, "1337");
        getConfig().options().copyDefaults(true);
        saveConfig();
        }
    public void onEnable() {
        loadConfiguration();
        getLogger().info("Argonath RPG Spawn Plugin Enabled!");
        this.getServer().getPluginManager().registerEvents(new ForceSpawn(), this);
    }   
    public void onDisable() {
        getLogger().info("Argonath RPG Spawn Plugin Disabled!");
    }
@EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        Player player = event.getPlayer();
        Integer xx;
        Integer yy;
        Integer zz;
        xx = getConfig().getInt("spawnlocation.x");
        yy = getConfig().getInt("spawnlocation.y");
        zz = getConfig().getInt("spawnlocation.z");
        double x;
        double y;
        double z;
        x = (double)xx;
        y = (double)yy;
        z = (double)zz;
        Location playerLocation = player.getLocation();
        playerLocation.setX(x);
        playerLocation.setY(y);
        playerLocation.setZ(z);
        player.teleport(playerLocation);
        }
 
}
 

The error is under the PlayerJoinEvent handler. I just can't pinpoint where. The error line is

Code:text

 
Integer xx;
 

Here is the stacktrace:

Code:text

 
15:40:50 [SEVERE] Could not pass event PlayerJoinEvent to Argonath RPG Spawn Plugin v1
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
at net.minecraft.server.v1_6_R2.PlayerList.c(PlayerList.java:206)
at net.minecraft.server.v1_6_R2.PlayerList.a(PlayerList.java:102)
at net.minecraft.server.v1_6_R2.PendingConnection.e(PendingConnection.java:130)
at net.minecraft.server.v1_6_R2.PendingConnection.d(PendingConnection.java:43)
at net.minecraft.server.v1_6_R2.DedicatedServerConnectionThread.a(DedicatedServerConnectionThread.java:41)
at net.minecraft.server.v1_6_R2.DedicatedServerConnection.b(SourceFile:29)
at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:590)
at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:226)
at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:486)
at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:419)
at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.IllegalArgumentException: File cannot be null
at org.apache.commons.lang.Validate.notNull(Validate.java:203)
at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(YamlConfiguration.java:170)
at org.bukkit.plugin.java.JavaPlugin.reloadConfig(JavaPlugin.java:117)
at org.bukkit.plugin.java.JavaPlugin.getConfig(JavaPlugin.java:111)
at com.argonathrpg.minecraft.forcespawn.ForceSpawn.onPlayerJoin(ForceSpawn.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
... 14 more
 

Any help would be greatly appreciated.

NOTE: I do realize that everything is on the same class file, and I'm not supposed to, however it is just to see if I can actually make it work. Also, that method of teleportation works if I have the co-ordinates compiled in. After adding the config part it screwed me over.


Thanks,

Adam

 

adampoconnor Do you have a config.yml in your jar at all?

 

adampoconnor
You can't register like that and try this.saveDefaultConfig(); is there anything inside the config at all?

 

foodyling There is.

Code:yaml

 
position:
x: 1337
y: 1337
z: 1337
 

Also, I am not using tabs in YAML

xTrollxDudex

Read above on config. Changed everything to this.saveDefaultConfig() to no avail

 

adampoconnor
Replace line 38:

PHP:

this.getServer().getPluginManager().registerEvents(this, this);

 

That appears to have worked. I need to reset my co-ordinates and I'll let you know what happens

Alright. New issue. Although I don't get any exceptions, I now get an issue with the fact that I spawn at 0,0,0 every time....

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

 

adampoconnor
Just create a new location

PHP:

Location loc = new Location(player.getWorld(), x, y, z);
player.teleport(loc);

 

No dice. My guess is, it's not reading the YAML correctly.

EDIT: Got it working. I got the permissions nodes wrong. Thanks for the help. Solved.