Getting Certain Players

I am creating a staff plugin, and when you type /staff it gets the number of online staff players then prints their names. I am stuck on a point where I need the staff members to have a permission, so it does not get all of the players instead of the sender having the permission.

Code:java

public boolean onCommand(CommandSender sender, Command cmd , String CommandLabel , String[] args){
        if(args[0].equalsIgnoreCase("staff")){
            if(sender.hasPermission("staff.online"))
            sender.sendMessage("Staff:");
        }
        return true;
 
    }

 

Code:java

for(Player p : Bukkit.getOnlinePlayers())
{
    if(p.hasPermission(staff.staff) //replace by your permisson
    {
        sender.sendMessage(ChatColor.RED + p.getName());
    }
}
sender.sendMessage("------------"); //finish

 

Run through all the players online and check if they have that permission.

EDIT: Ninja'd..