My Code

package mindless.pvp.craft.pvp;

import java.util.ArrayList;

import org.bukkit.ChatColor;
import org.bukkit.Effect;
import org.bukkit.GameMode;
import org.bukkit.Material;
import org.bukkit.Sound;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.entity.PlayerDeathEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.permissions.Permission;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.potion.PotionEffectType;

public class Main extends JavaPlugin {

	public Permission feed = new Permission("CommandCentral.feed");
	public Permission heal = new Permission("CommandCentral.heal");
	public Permission setspawn = new Permission("CommandCentral.setspawn");
	public Permission kill = new Permission("CommandCentral.kill");
	public Permission gamemode = new Permission("CommandCentral.gamemode");
	public Permission ci = new Permission("CommandCentral.ci");
	public Permission pvp = new Permission("CommandCentral.pvp");
	public Permission donator = new Permission("CommandCentral.donator");
	public Permission suicide = new Permission("CommandCentral.suicide");
	public final ArrayList<String> kits = new ArrayList<String>();

	public void onEnable() {
	}
	public void onDisable() {
	}

	@SuppressWarnings("deprecation")
	@EventHandler

    public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String args[]) {
		Player p = (Player) sender;
        else if (commandLabel.equalsIgnoreCase("pvp")) {
            if(p.hasPermission("CommandCentral.pvp") || p.isOp()){
            	if(!kits.contains(p.getName())){
    		p.sendMessage(ChatColor.GOLD + "You Have Choosen The" + ChatColor.WHITE + " PvP"
            + ChatColor.GOLD + " Kit!");
    		kits.add(p.getName());
    		ItemStack d = new ItemStack(Material.DIAMOND_SWORD);
    		d.addEnchantment(Enchantment.DAMAGE_ALL, 1);
    		p.getInventory().clear();
    		p.getInventory().addItem(d);
    		p.getInventory().setHelmet(new ItemStack (Material.IRON_HELMET, 1));
    		p.getInventory().setChestplate(new ItemStack(Material.IRON_CHESTPLATE, 1));
    		p.getInventory().setLeggings(new ItemStack(Material.IRON_LEGGINGS, 1));
    		p.getInventory().setBoots(new ItemStack(Material.IRON_BOOTS, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		p.getInventory().addItem(new ItemStack (Material.MUSHROOM_SOUP, 1));
    		}
        	}
    		} else {
        		p.sendMessage(ChatColor.RED + "Please Contact An Admin, This Is An Error!");
    		}
		return false;
	}
	@EventHandler
	public void onPlayerDeath(PlayerDeathEvent e){
		kits.remove(e.getEntity().getName());
	}
}