My First Bukkit Plugin

//Now i Fixed Everything that said this.Logger to this.logger
//now i have just a 3 errors left
//this is the Errors on helloworld.java
//Image: http://dl.dropbox.com/u/3104034/almostthere%21.png
//Code:
package com.github.klutch2013.TestPlugin;

import java.util.logging.Logger;

import org.bukkit.event.Event;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class helloworld extends JavaPlugin{

    public static helloworld plugin;
    public final Logger logger = Logger.getLogger("Minecraft");
    public final ServerChatPlayerListener playerListener = new ServerChatPlayerListener(this);

    @Override
    public void onDisable() {
        PluginDescriptionFile pdfFile = this.getDescription();
        this.logger.info(pdfFile.getName() + " is now disabled. ");
    }

    @Override
    public void onEnable() {
        PluginManager pm = getServer().getPluginManager();
        pm.registerEvents(this.playerListener, this);
        PluginDescriptionFile pdfFile = this.getDescription();
        this.logger.info(pdfFile.getName() + " Version " + pdfFile.getVersion() + " is enabled" );

    }
}

//The ServerChatPlayerListener.java file has no errors now.