Commandkit.java
package io.github.sonnysboy.kitplugin.commands;

import io.github.sonnysboy.kitplugin.KitPlugin;

import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;

public class CommandKit implements CommandExecutor {

	@Override
	public boolean onCommand(CommandSender sender, Command command,
			String rawCommand, String[] args) {
		if (sender instanceof Player) {
			// Sender is a player
			Player p = (Player) sender;
			giveKit(p);
			return true;
		} else {
			// Sender is not a player
			sender.sendMessage("You must be a player to equipt a kit.");
		}

		return false;
	}

	private void giveKit(Player p) {
		if(KitPlugin.getPlayerCooldown().kitAval(p)) {
			ItemStack pickAxe = new ItemStack(Material.DIAMOND_PICKAXE, 1);
			ItemStack diamondSpade = new ItemStack(Material.DIAMOND_SPADE, 1);
			ItemStack diamondAxe = new ItemStack(Material.DIAMOND_AXE, 1);
			ItemStack diamondSword = new ItemStack(Material.DIAMOND_SWORD, 1);
			ItemStack diamondHoe = new ItemStack(Material.DIAMOND_HOE, 1);
			ItemStack cookie = new ItemStack(Material.COOKIE, 1);
			p.getInventory().addItem(pickAxe);
			p.getInventory().addItem(diamondSpade);
			p.getInventory().addItem(diamondAxe);
			p.getInventory().addItem(diamondSword);
			p.getInventory().addItem(diamondHoe);
			p.getInventory().addItem(cookie);
			KitPlugin.getPlayerCooldown().addCooldown(p);
		}else{
			p.sendMessage("Your kit is on cooldown for : " + KitPlugin.getPlayerCooldown().toString());
		}

	}
}

KitPlugin.java

package io.github.sonnysboy.kitplugin;

import io.github.sonnysboy.kitplugin.commands.CommandKit;

import org.bukkit.plugin.java.JavaPlugin;

public class KitPlugin extends JavaPlugin {
	public static PlayerCooldown pCooldown;
	@Override
	public void onEnable()
	{
		//REgistering Commands
		this.getCommand("kit").setExecutor(new CommandKit());
		pCooldown = new PlayerCooldown();
	}

	@Override
	public void onDisable()
	{

	}

	public static PlayerCooldown getPlayerCooldown()
	{
		return pCooldown;
	}

}

PlayerCooldown.java
package io.github.sonnysboy.kitplugin;

import org.bukkit.entity.Player;

public class PlayerCooldown {

	public PlayerCooldown()
	{

	}

	public void addCooldown(Player p) {
		// TODO Auto-generated method stub

	}

	public long getCooldown(Player p) {
		return (Long) null;
	}

	public boolean kitAval(Player p) {
		// TODO Auto-generated method stub
		return false;
	}
}