Hey, I just finished programming a plugin. It's called "GuardFreeze" which allows guards to hit players that are holding contraband items, which teleports them to an interrogation room. Where they have to give up the item to the guard, if not they receive jail time. The plugin is 30% done. You first as a guard, have to type '/guard' to receive the punisher(stick). But once I'm ingame I try to type '/guard' it doesn't register. It justs sends the same message over and over again: '/guard' It repeats it in white chat color.

Here is the code:
package me.GoldenRod.GuardFreeze;

import java.util.Arrays;
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.event.Listener;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;

public class Freeze extends JavaPlugin implements Listener{


@SuppressWarnings("deprecation")
public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args) {
if(sender instanceof Player){
if (!((Player) sender).hasPermission("custom.guardfreeze")) {
Player p = (Player)sender;
if((commandLabel.equalsIgnoreCase("guard"))&&(args.length == 0)) {
ItemStack guard = new ItemStack(Material.STICK, 1);
Inventory inv = p.getInventory();
inv.setItem(0, guard);
p.updateInventory();
if(inv.getItem(0) !=null){
ItemMeta guardIM = inv.getItem(0).getItemMeta();
guardIM.setDisplayName(ChatColor.GOLD + "Jail em");
List<String> lore = Arrays.asList("This amazing stick", "made with special powers, crafted", "from Apollo's Gods ");
guardIM.setLore(lore);
inv.getItem(0).setItemMeta(guardIM);
}

}
}
}
return false;
}

}
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Here's the plugin.yml:
name: GuardFreeze
version: 1
description: Freeze em players!
main: me.GoldenRod.GuardFreeze.Freeze
author: GoldenRodHero
commands:
guard:
description: freeze dem.
usage: /<command>
===============================================
Thank you if you find out what the problem was!