PlayerDeathEvent help

the error: "The method onPlayerDeath(PlayerDeathEvent) of type Deaths must override or implement a supertype method".

Code:

@Override
    @EventHandler
    public void onPlayerDeath(PlayerDeathEvent e) {
        Player p = e.getEntity();
        Bukkit.broadcastMessage("DEAD");
        if(once.contains((p))){
            once.remove((p));
            if(deathsOn) {
                twice.add((p));
            } else {
                dead.add(p);
                p.setGameMode(GameMode.SPECTATOR);
                Bukkit.broadcastMessage(p.getName() + "was final killed by" + p.getKiller().getName()+ "!");

            }
           
           
           
        } else if(twice.contains((p))){
            twice.remove((p));
            dead.add((p));
            p.setGameMode(GameMode.SPECTATOR);
            Bukkit.broadcastMessage(p.getName() + "was final killed by" + p.getKiller().getName()+ "!");
        } else if(dead.contains((p))){
            p.sendMessage("NOW YOU ARE SUPER-DEAD!!!");
        } else{
            if(deathsOn) {
                once.add((p));
            } else {
                dead.add(p);
                p.setGameMode(GameMode.SPECTATOR);
                Bukkit.broadcastMessage(p.getName() + "was final killed by" + p.getKiller().getName()+ "!");

            }
                }
       
           
       
    }

 

This is how it should look:

public class Main extends JavaPlugin implements Listener {

@Override
public void onEnable() {

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

}
@EventHandler
public void onPlayerDeath(PlayerDeathEvent e) {
//do stuff
}
}