public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
    	Player p = (Player)sender;
    		if(!(sender instanceof Player)){
    			return true;
    		}
    		Player all = (Player) Bukkit.getOnlinePlayers();
    		if(cmd.getName().equalsIgnoreCase("limparchat")){
    			if(p.isOp()){

    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			p.sendMessage("");
    			if(all.isOp()){
    				if(all == p){
    					return true;
    				}
    				all.sendMessage("§aChat limpo por §e" + p.getName() + "§a." );
    				all.playSound(all.getLocation(), Sound.LEVEL_UP, 1.0F, 1.0F);
    			}
    			p.sendMessage("§6§l[DG] §r§eChat foi limpado com sucesso!");
    			p.playSound(p.getLocation(), Sound.LEVEL_UP, 1.0F, 1.0F);
    		} else {
    			p.sendMessage("§cVocê não tem permissao para executar esse comando!");
    			return true;
    		}
    		}
    		if(cmd.getName().equalsIgnoreCase("mutarchat")){
    			if(p.isOp()){
    				mute.add(all.getName());
    			} else {
    				p.sendMessage("§cVocê não tem permissao para executar esse comando!");
        			return true;
    			}
    		}