Solved java.lang.NullpointerException

I get the following error someone know how to fix?
Server log:

Code:

2012-05-03 10:13:01 [INFO] Preparing level "world"
2012-05-03 10:13:01 [INFO] Default game type: 0
2012-05-03 10:13:01 [INFO] Preparing start region for level 0 (Seed: -4497042578180217018)
2012-05-03 10:13:02 [INFO] Preparing start region for level 1 (Seed: -4497042578180217018)
2012-05-03 10:13:02 [INFO] Preparing spawn area: 77%
2012-05-03 10:13:02 [INFO] Preparing start region for level 2 (Seed: -4497042578180217018)
2012-05-03 10:13:02 [INFO] Server permissions file permissions.yml is empty, ignoring it
2012-05-03 10:13:02 [INFO] Done (1,485s)! For help, type "help" or "?"
2012-05-03 10:18:11 [INFO] Starting minecraft server version 1.2.5
2012-05-03 10:18:11 [INFO] Loading properties
2012-05-03 10:18:11 [INFO] Starting Minecraft server on *:25565
2012-05-03 10:18:11 [INFO] This server is running CraftBukkit version git-Bukkit-1.2.5-R1.2-b2167jnks (MC: 1.2.5) (Implementing API version 1.2.5-R1.2)
2012-05-03 10:18:11 [SEVERE] Could not load 'plugins\trustosplugin.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NullPointerException
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:148)
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
    at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:213)
    at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:189)
    at net.minecraft.server.ServerConfigurationManager.<init>(ServerConfigurationManager.java:53)
    at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:156)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:422)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.NullPointerException
    at org.bukkit.plugin.PluginLogger.<init>(PluginLogger.java:22)
    at org.bukkit.plugin.java.JavaPlugin.getLogger(JavaPlugin.java:359)
    at sotsurt.TrustosPlugin.<init>(TrustosPlugin.java:12)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:144)
    ... 8 more

Main class:

Code:

package sotsurt;
 
import java.util.logging.Logger;
 
 
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;
 
public class TrustosPlugin extends JavaPlugin{
    Logger log = this.getLogger();
   
   
    @Override
    public void onEnable(){
        log.info("Elemental plugin has been Enabled");
       
    }
   
    public void onDisable(){
        log.info("Elemental plugin has been Disabled");
       
    }
   
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        Player player = null;
        if (sender instanceof Player) {
            player = (Player) sender;
        }
        if (cmd.getName().equalsIgnoreCase("faction")){ // If the player typed /basic then do the following...
            player.sendMessage("test");
            return true;
        }
       
        return false;
    }
   
   
}

yml file

Code:

name: TrustosPlugin
main: sotsurt.TrustosPlugin
version: Version Number 1
commands:
  faction:
      description: This is a faction command.
      usage: /<command>
    

 

A few things;
1. This should have been in Plugin Development
2. Reading How To Troubleshoot Stack Traces will help a lot
3. The error in on line 12
at sotsurt.TrustosPlugin.<init>(TrustosePlugin.java:12)
at sotsurt.TrustosPlugin.<init> - Package Location
TrustosePlugin.java:12 - Class File and line

4. To fix, try change

Code:java

 
Logger log = this.getLogger();
 

to

Code:java

 
Logger log = Logger.getLogger("Minecraft");
//Same was as saying this.getLogger(), sometimes fixes issue
 

If, for some reason that doesn't work; use this;

Code:java

 
public class TrustosePlugin extends JavaPlugin{
Logger log;
 
public void onEnable(){
log = Logger.getLogger("Minecraft");
}
}
 

 

Thank you very much I ow you one

 

No worries, just add SOLVED to title so other know.