Args commands

package fr.src.main;

import java.util.ArrayList;
import java.util.List;

import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin{

    public void onEnbale()
    {
        System.out.println("On");
    }

    public void onDisable()
    {
        System.out.println("Off");
    }

    public boolean onCommand(CommandSender sender, Command cmd, String label, String[]args)
    {
        Player p = (Player) sender;

        if(cmd.getName().equalsIgnoreCase("g"))
        {
            String item = args[0];
            Integer qtt = Integer.valueOf(args[1]);
            //     /g dirt 42
            //      -1  0   1  2  3  4
            p.getInventory().setItem(0, new ItemStack(Material.getMaterial(item), qtt));
            p.sendMessage(ChatColor.AQUA+"[G] - Vous avez reçu "+ChatColor.GREEN+qtt+ChatColor.AQUA+" blocs de "+ChatColor.GREEN+item+ChatColor.AQUA+" .");
        }

        if(cmd.getName().equalsIgnoreCase("gid"))
        {
            Integer item = Integer.valueOf(args[0]);
            Integer qtt = Integer.valueOf(args[1]);

            p.getInventory().setItem(0, new ItemStack(Material.getMaterial(item), qtt));
            p.sendMessage(ChatColor.AQUA+"[G] - Vous avez reçu "+ChatColor.GREEN+qtt+ChatColor.AQUA+" blocs de "+ChatColor.GREEN+ Material.values()[item] +ChatColor.AQUA+" .");
        }

        if(cmd.getName().equalsIgnoreCase("glist"))
        {
            List<Material> glist = new ArrayList<Material>();

            for(int i = 0; i < Material.values().length; i++)
            {
                glist.add(Material.values()[i]);
            }

            p.sendMessage("Blocs / items du jeu :");
            p.sendMessage(":"+glist);
        }

        return true;
    }

}