nullpointerexception for getConfig

I've been trying to use my plugin's config file to store some data, but when I run it, I get this error:

Line 265:

thing is an instance of my main class.

 

KiF
You need to initiallise the config in your onEnable

this.getConfig().options().copyDefaults(true);

 

Plo124 I tried initializing the config in my onEnable with that line, but it didn't appear to do anything.

 

Plo124 no need to call copyDefaults()
KiF thing is null

 

fireblast709 I initialized thing now, but I get more problems after doing that:
StackTrace (bottom to top):

Code:

28.06 18:52:46 [Server] INFO at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:126) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at net.minecraft.server.v1_7_R3.DedicatedPlayerList.<init>(SourceFile:14) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at net.minecraft.server.v1_7_R3.PlayerList.<init>(PlayerList.java:68) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.craftbukkit.v1_7_R3.CraftServer.<init>(CraftServer.java:319) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugins(CraftServer.java:357) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:52) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at java.lang.Class.newInstance(Class.java:433) ~[?:1.8.0_05]
28.06 18:52:46 [Server] INFO at java.lang.reflect.Constructor.newInstance(Constructor.java:408) ~[?:1.8.0_05]
28.06 18:52:46 [Server] INFO at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_05]
28.06 18:52:46 [Server] INFO at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_05]
28.06 18:52:46 [Server] INFO at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_05]
28.06 18:52:46 [Server] INFO at me.KiF.ArenaBattle.thing1.<init>(thing1.java:13) ~[?:?]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:59) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:101) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO Caused by: java.lang.IllegalStateException: Initial initialization
28.06 18:52:46 [Server] INFO at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:436) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:182) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at net.minecraft.server.v1_7_R3.MinecraftServer.a(MinecraftServer.java:282) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at net.minecraft.server.v1_7_R3.MinecraftServer.g(MinecraftServer.java:326) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at net.minecraft.server.v1_7_R3.MinecraftServer.n(MinecraftServer.java:352) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.craftbukkit.v1_7_R3.CraftServer.enablePlugins(CraftServer.java:382) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugin(CraftServer.java:448) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:324) [craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:250) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at me.KiF.ArenaBattle.thing1.onEnable(thing1.java:25) ~[?:?]
28.06 18:52:46 [Server] INFO at me.KiF.ArenaBattle.ABListener.<init>(ABListener.java:19) ~[?:?]
28.06 18:52:46 [Server] INFO at me.KiF.ArenaBattle.thing1.<init>(thing1.java:13) ~[?:?]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:59) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:98) ~[craftbukkit_1.7.9.jar:git-Bukkit-1.7.2-R0.3-66-g43d8943-b3078jnks]
28.06 18:52:46 [Server] INFO java.lang.IllegalArgumentException: Plugin already initialized!
28.06 18:52:46 [Server] ERROR Error occurred while enabling ArenaBattlePlugin v1.0.3 (Is it up to date?)

Line 13:

Line 19:

Line 25:

All suggestions are appreciated.

 

KiF never ever create an instance of your main class. Pass it to other classes using the constructor

 

I've now tried using

instead of the previous way I tried it, but now I'm back where I started, with the nullpointerexception at the same place. Could you provide an example pls?

 

KiF
Don't use static.

Again pass instance through constructors.
http://docs.oracle.com/javase/tutorial/java/javaOO/constructors.html

 

Check if the player is null.....

 

Gater12 I tried what you said, but that makes the method invalid since it's an eventhandler method.
iiHeroo player is not null

 

KiF
Have you even taken a look at the site I gave you? It gives you a detailed explanation of constructors.

 

KiF
I think this way is easier...

Code:

//In your main class
public static [Class Name] instance;
 
public void onEnable(){
instance = this;
}
 
public void onDisable(){
instance = null;
}
 
public static [Class Name] getInstance(){
return instance;
}

And in your other class where you want the instance,

Code:

[Main Class Name] main = [Main Class Name].getInstance();

Thats how I did it

 

BlazingBroGamer
You really shouldn't have a static instance of your main class. You should use constructors to pass the instance, and it shows that you know the concepts of OOP.

But if you really wanted a static instance of your plugin:

Code:java

public static Main getInstance(){
    return JavaPlugin.getPlugin(Main.class);
}

 

Gater12
Ahh I derped :3 I will use your method from now thanks
EDIT: "this" cannot be used in static constructors I think

 

BlazingBroGamer
Whoops. I fixed it.

 

Gater12
Errr this might be a bit off topic, but... the code you give gives an java.lang.IllegalStateException...