pixel

package mrmb2013.pixel;

import java.io.PrintStream;
import org.bukkit.Server;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class pixel extends JavaPlugin
{
  public void onEnable()
  {
    System.out.println("[Pixel] Enable");
    PluginManager pm = getServer().getPluginManager();
    pm.registerEvents(new PlayerCommand(this), this);
  }

  public void onDisable()
  {
    System.out.println("[Pixel] Disable");
  }
}

PlayerCommand

package mrmb2013.pixel;

import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerCommandPreprocessEvent;
import org.bukkit.plugin.Plugin;

public class PlayerCommand
  implements Listener
{
  Plugin plugin;

  public PlayerCommand(pixel pixel)
  {
    this.plugin = pixel;
  }

  @EventHandler(priority=EventPriority.LOWEST)
  public void onPlayerCommand(PlayerCommandPreprocessEvent e)
  {
    Player p = e.getPlayer();
    String msg = e.getMessage();
    String[] args = msg.split(" ");

    if (args[0].equalsIgnoreCase("/pixel")) {
      e.setCancelled(true);

      if (args.length == 1) {
        p.sendMessage(ChatColor.RED + "Wrong usage ! /pixel help ");
      }

      if (args[1].equalsIgnoreCase("help")) {
        p.sendMessage(ChatColor.GOLD + "======= " + ChatColor.AQUA + "Pixel Help" + ChatColor.GOLD + " =======");
        p.sendMessage(ChatColor.GOLD + "/pixel shop");
        p.sendMessage(ChatColor.GOLD + "/pixel me");
        p.sendMessage(ChatColor.GOLD + "/pixel remove");
        p.sendMessage(ChatColor.GOLD + "/pixel buy");
        p.sendMessage(ChatColor.GOLD + "/pixel give");
        p.sendMessage(ChatColor.GOLD + "==========================");
      } else if (args[1].equalsIgnoreCase("shop")) {
        p.sendMessage(ChatColor.RED + "The shop is coming soon !");
      } else if (args[1].equalsIgnoreCase("me")) {
        p.sendMessage(ChatColor.AQUA + "You have " + ChatColor.YELLOW + "0 " + ChatColor.AQUA + "pixel(s)");
      } else if (args[1].equalsIgnoreCase("give")) {
        if (p.isOp())
          p.sendMessage(ChatColor.RED + "Usage : /pixel give [player] <amount>");
        else
          p.sendMessage(ChatColor.RED + "You don't have access to this command.");
      }
      else if (args[1].equalsIgnoreCase("remove")) {
        if (p.isOp())
          p.sendMessage(ChatColor.RED + "Usage : /pixel remove [player] <amount>");
        else
          p.sendMessage(ChatColor.RED + "You don't have access to this command.");
      }
      else if (args[1].equalsIgnoreCase("buy")) {
        p.sendMessage(ChatColor.RED + "The shop is coming soon !");
      }
      else {
        p.sendMessage(ChatColor.RED + "Invalid command ! /pixel help");
      }
    }
  }
}