HELP m9

package me.KitGUI.main;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.Sound;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.event.block.Action;

public class Main extends JavaPlugin implements Listener {

    public void onEnable() {
        getServer().getPluginManager().registerEvents(this, this);

    }
    private void openGUI(Player p) {
        Inventory inv = Bukkit.createInventory(null, 9, ChatColor.RED + "Kit Selector" );
        ItemStack Donator = new ItemStack (Material.DIAMOND_BLOCK);
        ItemMeta  DonatorMeta = Donator.getItemMeta();
        ItemStack Starter = new ItemStack (Material.DIRT);
        ItemMeta StarterMeta = Starter.getItemMeta();
        ItemStack Raid = new ItemStack (Material.GOLDEN_APPLE) ;
        ItemMeta RaidMeta = Raid.getItemMeta();
        ItemStack Bedrock = new ItemStack (Material.BEDROCK);
        ItemMeta BedrockMeta = Bedrock.getItemMeta();
        ItemStack Food = new ItemStack (Material.COOKED_BEEF);
        ItemMeta FoodMeta = Food.getItemMeta();
        RaidMeta.setDisplayName(ChatColor.RED + "The Perfect Raiding Kit!");
        Raid.setItemMeta(RaidMeta);
        FoodMeta.setDisplayName(ChatColor.GREEN + "Food!");
        Food.setItemMeta(FoodMeta);
        StarterMeta.setDisplayName(ChatColor.GRAY + "Basic Supplies");
        Starter.setItemMeta(StarterMeta);
        BedrockMeta.setDisplayName(ChatColor.BLACK + "BedRock Kit!");
        Bedrock.setItemMeta(BedrockMeta);
        DonatorMeta.setDisplayName(ChatColor.AQUA + "Donator kit!");
        Donator.setItemMeta(DonatorMeta);
        inv.setItem(1, Starter);
        inv.setItem(2, Food );
        inv.setItem(3, Raid);
        inv.setItem(4, Bedrock);
        inv.setItem(5, Donator);
        p.openInventory(inv);

    }
    @EventHandler
    public void PlayerJoin(PlayerJoinEvent e){
        ItemStack kitselector = new ItemStack(Material.COMPASS);
        ItemMeta m = kitselector.getItemMeta();
        m.setDisplayName("" + ChatColor.RED + ChatColor.ITALIC + "KIT SELECTION");
        kitselector.setItemMeta(m);
        e.getPlayer().getInventory().setItemInHand(kitselector);


    }

    @EventHandler
    public void onInventoryClick(InventoryClickEvent event){
        if(!ChatColor.stripColor(event.getInventory().getName()).equalsIgnoreCase("Kit Selector"))
        return;
        Player player = (Player) event.getWhoClicked();
        event.setCancelled(true);
        if(event.getCurrentItem()==null || event.getCurrentItem().getType()==Material.AIR||!event.getCurrentItem().hasItemMeta()){
            player.closeInventory();
            return;

        }
        switch(event.getCurrentItem().getType()) {
        case BEDROCK:
            player.performCommand("ekit bedrock");
            player.closeInventory();
            player.playSound(player.getLocation(), Sound.ORB_PICKUP, 1.0F, 1.0F);
            player.sendMessage(String.format("%sGiven The %sBedrock Kit%s!", ChatColor.RED, ChatColor.ITALIC,ChatColor.BOLD));
            break;
        case DIRT:
            player.performCommand("ekit starter");
            player.closeInventory();
            c.playSound(c.getLocation(), Sound.ORB_PICKUP, 1.0F, 1.0F);
            player.sendMessage(String.format("%sGiven The %sStarter Kit%s!", ChatColor.RED, ChatColor.ITALIC,ChatColor.BOLD));
            break;
        case GOLDEN_APPLE:
            player.performCommand("ekit Raid");
            player.closeInventory();
            player.playSound(player.getLocation(), Sound.ORB_PICKUP, 1.0F, 1.0F);
            player.sendMessage(String.format("%sGiven The %sRaid Kit%s!", ChatColor.RED, ChatColor.ITALIC,ChatColor.BOLD));
            break;
        case COOKED_BEEF:
            player.performCommand("ekit food");
            player.closeInventory();
            player.playSound(player.getLocation(), Sound.ORB_PICKUP, 1.0F, 1.0F);
            player.sendMessage(String.format("%sGiven Some %sFood%s!", ChatColor.RED, ChatColor.ITALIC,ChatColor.BOLD));
            break;
        case DIAMOND_BLOCK:
            player.performCommand("ekit Donator");
            player.closeInventory();
            player.playSound(player.getLocation(), Sound.ORB_PICKUP, 1.0F, 1.0F);
            player.sendMessage(String.format("%sNote This kit only works for %sDonators%s!", ChatColor.RED, ChatColor.ITALIC,ChatColor.BOLD));
            break;
        default:
            player.closeInventory();
            break;

        }
    }





    @EventHandler
    public void onPlayerInteract(PlayerInteractEvent event) {
        Action a = event.getAction();
        ItemStack is = event.getItem();

        if(a == Action.PHYSICAL || is == null || is.getType()==Material.AIR)
            return;
        if (is.getType() == Material.COMPASS)
            openGUI(event.getPlayer());
    }
}