Assigning Certain Listeners to Certain Players

Hi I am creating a plugin where listeners have to be assigned to a certain class. I know that a simple solution would be to make a "global" listener class but it would be ineffective for what I am doing. For some reason when I install this on my test server the listeners act as if they are ignored.

This is my main class:

Code:

public class Main extends JavaPlugin {
    public static Main plugin;

    public void onEnable() {
    }

    public void onDisable() {

    }

    public boolean onCommand(CommandSender sender, CommandSender command,
            String commandLabel, String[] args) {
        if (commandLabel.equals("test")) {
                UniqueListener v = new UniqueListener((Player) sender);
        }
        return false;
    }
}

Then my UniqueListener class

Code:

public class UniqueListener implements Listener {

public UniqueListener(Player player) {
    Bukkit.getServer().getPluginManager().registerEvents(this, Main.plugin);
    }
@EventHandler
    public void onEntityDamage(EntityDamageByEntityEvent e) {
           e.getEntity().sendMessage("Listener is working");

     }
}

Now when I install the plugin on my server I can assure that the command works but when a player damages a entity it does not display the message

 

Hey man, register your listener in your OnEnable. Its something like this

Code:

Bukkit.getServer().getPluginManager().registerEvents(UniqueListener, this);

 

Register your events,
Use an ArrayList<String> to store the players name check if they are in it to make things only apply for them.